it self and naturally cold because dense and heavy but hot accidentally onely Now the great question will be from whence this heat of the earth doth proceed I will first shew from whence it doth not proceed and thereby confute the opinion of some 1. It proceeds not from the Sun as many imagine supposing that all heat in the world comes from thence and that the earth being beat upon by the sun-beames doth thereby receive into it self a certain heating vertue But this is very improbable seeing that they that digg in the bowells of the earth observe that the heating power of the Sun although in most hot seasons doth not penetrate the superficies of the earth above six feet deep do not we see how a thin wall or boughs of trees in an arbour keep off the heat of the sun though never so great to say nothing of the earths being colder two feet deep in Summer than in Winter 2. It proceeds not from an antiperistasis of the cold air in the superficies of the earth for this hath place no further than the heating power of the rayes came Besides the naturall cold of the solid and dense earth must of necessity have greater power to repell upwards than the adventious of the soft thin and light air to force downwards the heat of the sun which indeed in all reason should being generated but a little way within the earth of its own accord being very light ascend upward through the passage made by the Sun and this we know that after a long Summers day it is before the next morning almost vanished though never so great much less will it be preserved till and through the Winter It must then of necessity be another kind of heat it is such that towards the superficies of the earth is colder as being more remote from its original or beginning and is in Summer-time by reason of the Suns opening the earth and making vent easily expired and is therefore less perceived but in Winters frost is restrained from exhaling and is condensed as may easily be perceived in deep wells Now to know from what principle this heat hath its original or rise we must examine whence proceeds the heat in hot baths for there the subterraneal heat offers it self more conspicuous and apparent to our view But concerning the original of the heat of subterraneal waters there is as much doubt as of the generation of those waters themselves And therefore I shall in the first place endeavour to prove how heat doth not come thereby confuting the opnion of some and in the next place to shew which way it may proceed probably 1. It is not caused by the heat of the Sun and that partly for the reasons above mentioned as also because then those waters would be hotter in Summer-time than in Winter 2. It is not from the agitation of winds in the channels of the fountains for if so then they being vented forth the heat would presently be extinguished 3. It comes not from sulphur Calx viva as is the opinion of many learned as Seneca c. and that because neither doth sulphur at all heat unless it be actually hot nor Calx viva unless whilest it is dissolving in water to say nothing of that vast quantity which would in a little time be resolved and the sudden remarkable change that would be in hot springs 4. It proceeds not according to Doctour Jordens opinion from the fermentation that is in the generation of metals and minerals caused by the agent spirit acting upon the patient matter and so producing an actuall heat for ex motu fit Calor say all Philosophers which serves as an instrument to further this work of generation For if it were so then the heat in bathes would in time cease for he himself saith that this fermenting heat continues no longer till the generation of them be finished which is done in some determinate time but we see that the hot baths continue for ever Neither doth it suffice that he saith that generations of metalls are not terminated with one production but the mineral seed gathereth strength by enlarging it self and so it continually proceeds to subdue more matter under its government so as where once a generation is begun it continues many ages and seldom gives over as we see in the Iron mines of Illua the tin mines in Cornwall the lead mines at Mendip and the Peak which do not onely stretch further in extent of ground than hath been observed heretofore but also are renewed in the same ground which hath been formerly wrought I say his saying thus doth not suffice for though it be so as I do not deny but it may yet notwithstanding he doth not say that generation of metals continueth in one place except any ground be digged first and so space and place left for new mattter to come as is not in our baths and so by consequence the flowing of hot water would cease in that place where the said generation is not continued and if that generation be extended further yet so also and accordingly is the heat diminished unless it break forth continually in new places but we see hot springs continue many years together in one place at a constant heat Besides if this opinion were true then where we see metals and minerals generated there also must of necessity be hot baths but we see it is not so I shall now moreover demand of him how that crude metalline matter is before any the said fermentation sublimed from the central parts of the earth towards the superficies thereof if not by a subterraneall fire All these being excluded it remains now that we consider of a subterraneal fire onely for it seems impossible that so great and durable a heat should be caused or preserved by any other power whatsoever than that of fire and of this opinion was Empedocles an ancient Greek Philosopher and also Seneca but both these differ amongst themselves as to the manner of the heats proceeding from this fire and indeed from other Authours that seem to be more Anthentick The one is of opinion that it is sufficient if the fire be under the place through which the waters run and so like fire under a still force up the water by way of a vapour the other that the heat proceeds from some occult remote burning and passed through the veins and fibres of the earth where it meets with the waters and distill them up to the heads of the fountains But Agricola excepts against these two ways as being very impropable the first because the earth where the fire is could not endure the fire so long being of a calcinable cumbustible nature the second because by this way such a quantity of water could not be so heated as to be turned into a vapour so suddenly by so small a degree of heat There can therefore no other reason be given for these hot springs than the fire which
burns in the very cavities and caverns of them the cavities themselves consisting of a Bituminous matter For Bitumen and these things which are made of it being kindled burn in water by which also the said fire is cherished This you may see in Naphtha which is a kind of Bitumen for if you put but a drop thereof into water and put fire to it you will see it burn and continue burning so long that you would wonder at it which could not be unless it were fed by the moisture of the water which it did attract and transmutes into its own nature The like you may see in Champhir and other kind of Bitumen Pliny also affirms that these are some certain burnings in the earth which sometimes cast out Bitumen and are increased by raine And Fallopius saith that in the territories of Mutina is a short plat of ground out of which comes fire and smoke and the ground is all like dust which if you kindle you cannot quench again with water so that these kind of fires are perpetual and very long lasting in waters And hath it not been observed that a fiery Bituminous matter doth sometimes flow out of hot Springs Pliny makes mention that in the City Somosata of Comaganes a certain lake sent forth burning mud and Plato makes mention of the like concerning a Spring in Sicilia And Agricola reports another upon his credit Fallopius also saith that in many places where the earth is digged deep there are ashes and calcined stones which are the effects of fire and that in the territories of Modena Bolonia Florence and other places as in Italy c there are found Springs and several places casting out fire But as to Springs this happens onely where the bituminous matter is very near the Spring head and as high and where the veins are more open Now then the manner of Springs being caused by this Bituminous fire is this viz Seeing art doth for the most part imitate nature the thing is even the same in a hot Spring as in a distilling vessell or a seething pot covered with a lid onely there is this difference that to the bottom of these the fire is put on the out side but here the fire is within the cavern it self through which the water passeth and that either lying in the bottom or sticking to the sides thereof As therefore in these artificial vessels the water being by the heat of fire resolved into a vapour is forced upwards to the covers or heads thereof where by reason of some less degree of heat it is condensed into drops and returns to its self and into its own nature again So even after the same manner water in the caverns of the earth being heated by the Bituminous fire with which it is mixed is by the heat thereof forced into a great quantity of vapours which ascending through the cranines veins and fibres of the earth being there for the greatest part turned into water doth with the rest of the vapour yet very hot break forth in fountains viz very hot and very full of spirit so that it seems to boyle if the fountains be near to the caverns or onely warm if more remote And as these Springs differ in their heat according to their nearness or remoteness to their fire so also in their Bituminous odour and tast For as in distilled waters their Empyreuma vanisheth in length of time so in these in length of course So that these fountains which are very remote from this Bituminous fire are neither hot nor have any Bituminous odour And as by this natural distillation water is the best way procolated from its Sea saltness so also doth it become thereby less obnoxious to putrefaction For we know that distilled waters last longest Ob. It may be objected that if the matter preserving this fire were Bitumen then it would follow that almost the whole world should be Bitumen because ever since and before the memory of man these hot baths were and are like to continue for ever and therefore there must be that element for ever which must preserve that fire Sol. It doth not follow that there must at present be so much Bitumen as will maintain the fire so long for it is perpetually generated and as long as there shall be sic city and humidity in the earth there will be Bitumen generated And do not we see that metals are generated a new in the same places out of which they have formerly been digged Witness the profit which Fallopius saith the Duke of Florence hath by it and the testimony of learned Sendivogius who saith that there have been metals found in mountains where formerly there have been none If so then much more may sulphur and Bitumen be generated a new Ob. If it should be granted that Bitumen is generated a new yet if that were the aliment of the fire the fire would change its places because the Bitumen is consumed one part after another and so by consequence the baths would not be so equally hot as before the fire being by this means more remote from the fountains Sol. The flame is fed two ways either when the flame follows the matter as when the fire burns wood or when the matter follows the flame as in a lamp in which the oyle follows the flame not the flame the oyle and so it is in the earth and therefore the fire is always in one place Neither doth that withstand it which we see by experience in sulphur which is burnt part after part the fire following of it for you must know that in the earth where there is a great heat the Bitumen and Sulphur are melted and by this means follow the flame as I said before of Oil. Ob. If Bitumen feed the fire of these baths then the waters thereof would have the odour tast and colour of Bitumen but it appears that they have not Sol. Though all baths are heated by Bitumen yet some immediatly as those which do pass through the place where it burns these onely have the tast and odour of the same and some mediately as those that pass through places as rocks c. heated by Bitumen burning under them as was the opinion of Empedocles and Vitruvius Neither do I by this distinction contradict what I said before concerning the waters being distilled up by that fire onely which burned in the caverns and veins of the earth through which they pass for in this place I speak onely of the waters being heated this mediate heat not being sufficient to distill them to any considerable height Ob. It is very improbable that any subterraneal fire can burn within the bowels of the earth by reason of the want of air as we see in cupping glasses where as soon as they are applyed the fire goeth out besides the fuliginous vapours would recoil and choak the fire for there are few or no vents and exhalation seen Sol. There is not any such great want
of air in the earth nay there is such a plenty of it there that many learned Philosophers were nay Aristotle himself of opinion that all Springs were generated of subterraneal air 2. Air is not the aliment of fire for saith the Lord Bacon in his Treatise De vita morte Flamma non est aer accensus flame is not kindled air nay but unctuous vapours which arise from the matter that is burnt so that whereas without air fire goeth out and is extinguished the reason is because the fuliginous vapours wanting evaporation do recoil upon the fire and choak it Now this Bituminous fire is not being of a sulphureous nature very fuliginous and besides what smoak or sumes or vapours there come from it are subtile and penetrating and either evaporate through the superficies of the earth insensibly or incorporate themselves with some sutable subject that is in the earth or els are of themselves condensed into some unctuous matter adhearing to the sides of the caverns into which they are elevated So that according to the fuliginousness of vapours more or less recoiling the fire is more or less choaked Nay if we will believe Historians there have been burning Lamps closely shut up in glasses for fiftheen hundred years together in old sepulchres Now they burnt without air were not extinguished by reason the aliment of it was a Naphtha or Bituminous matter which was so pure that it bred no fuliginous vapours to choake the fire thereof 3. Where this fire is very great there is a great vent and exhalation but where but little little is the vent and insensible And in most places the fire is not great extensively but intensively because it is kept within a narrow compass as in small caverns and veins of the earth Q. How comes this Bitumen to be kindled in the earth Sol. It is agreed by all that are of the opinion that Bitumen is the matter of the subterraneal fire that hot and dry exhalations in the bowels of the earth being shut up and not finding any place to break forth are agitated attenuated rarified and so inflamed and being inflamed kindle the Bitumen Now lastly let no man wonder that there should be so great a force of fire conteined in the earth as to be sufficient for the generation of so many Springs that flow from thence daylie seeing Pliny and many other Philosophers wonder so much on the other side when they considered of the subterraneal fire and brake forth into an exclamation saying it is the greatest of all miracles that all things are not every day burnt up And cannot the burnings of the Aetnean Visuvian Nymphean mountains convince us a little of this But for the further confirmation of this opinion let us a little consider whence the winds proceed and what they are And are they not a hot and dry exhalation Now that this proceeds from and out of the earth most agree and that it entered not first into the earth is very probable For how can a hot dry light exhalation whose nature and property is to ascend descend into the earth in such a quantity as to cause such great and lasting winds as many times happen It must therefore be in the earth originally and be stirred up by some great heat in the same And what shall we think of the dry exhalation or spirit which is shut up in the caverns of the earth in great quantities and endeavouring to break forth through obstructed passages causeth great earth-quakes whereby Cities Towns and Countries have been overthrown to say nothing of those dreadfull noyses sometimes in the bowels of the earth Whence I say these great exhalations I say great because I confess that some little quantity of them may be caused by certain fermentations in the earth should be raised if not from some great heat of fire within the earth never any one yet could rationally determine And Caesius affirms that at a certain village called Tripergulus about an hundred and twenty years since after fiftteen dayes earthquake the earth opened and winds smoak and very great fires brake forth out of the same also pumice-stones and abundance of ashes in so much as they made a mountain and about that place were many hot Springs Also in Apulia is a hot bath called Tribulus where there is abundance of ashes and calcined stones and about the lake Lucrinus and Avernus are the same But if any should yet doubt that winds proceed from the earth or from the occult fires of the earth I shall make it yet further to appear by propounding to their consideration some observations concerning the Sea For it is observed that wind doth proceed from the Sea after a more apparent and violent manner than from the land and that more certain signes of an ensueing wind are taken from the Sea than from the land For when a calme Sea makes a murmuring noyse within it self it signifies that then the exhalations which is the matter of the wind are rising out of the earth and bottom of the Sea and this the fishes perceiving and being affraid of it especially Dolphins play above the water and the Sea-urchins fasten themselves to rocks the Sea a little swelling sheweth that the exhalation is endeavouring a vent then boyling sheweth that it hath penetrated to the superficies but as yet in a little quantity but then the eruptious of the exhalations following upon the waters mounted up aloft make wind and a tempest such as Marriners have often experience of when as they perceive that the wind blows from no other place but ariseth at themselves Now why waves or billows should preceed wind let any man if he can give any other reason Also I have been informed by some Marriners that a little before a great tempest there is seen a great quantity of an unctuous shineing matter floating on the top of the Sea and that this is an infallible signe of an ensuing storme The reason of this is because wind breaking forth out of the earth forceth up with it self that Bituminous matter from the place where it self was generated But now why winds should arise from the Sea more apparently than from the land is because there is more plenty of fire in the gulfes of the Sea for there it hath more aliment or fewel viz. Water which as I said before is the aliment of that Bituminous fire And whence are those great mountains of stones and minerals and those Islands which do sometimes arise up anew from the Sea but from a subterraneal fire which forceth them up from thence according to the judgement of learned Sendivogius and experienced Erker and those chasmes and gapings of the Sea Much more might be alleadged for the confirmation of this opinion as the manner of the generation of minerals and metals and many such like subterraneal operations which can not rationally be ascribed to any other cause than fire within the earth but all the premises being seriously
substance Maginus makes mention of a Lake in Ireland in the bottone whereof if you put a staff it will being pulled out some moneths after be turned into Iron viz. that part which stuck in the mud and that part which was in the water into a whetstone Aristotle mentions a certain Fountain in Sicilia into which if living creatures being before killed were put they would become alive again Athenaeus saith that the fish of the River Clitoris have a certain voyce Solinus speaks of a Fountain that is in Boeotia which helpeth the memory Isidorus saith the like of the River Lethe which causeth forgetfulnes Scaliger saith that the River of Juverna is of that nature that the leaves of a certain tree hanging over falling into it become living fishes Pliny reports that in Agro Carrinensi in Spain is a certain Fountain which makes all the fish that live in the water of it seem to be of a golden colour Agricola affirmes that fishes live in the hot Sulphur-waters of the lower Pannonia neer Buda Varro and Solinus affirm that there is a Fountain in Arabia which if the sheep drink thereof changeth the colour of their fleeces and maketh the white to become black Pliny reports that the water in Falisco maketh the Cattle that drink thereof to become white He also saith that in Pontus the River Astaces watering the fields makes the Mares that feed therein to yield a black milk which feeds the Countrey It is reported that in Ulcester in Ireland there is a Fountain in which he that washeth himself shall never become gray I could recken up many more waters of very strange natures but whether they or these already mentioned be all certainly true I will not undertake to affirm onely thus much I will say that some of them I my self have seen other some I am assured of from those whose unquestionable worth may justly command mine and other mens faith to their indeniable testimony and for the rest we may believe them according to the reputation of the Historian These here I mentioned that it might not seeme strange to us how capable waters are of receiving diversity of qualifications from the earth and although some of them may seem magical and supernatural yet may they upon a profound enquiry be made to appear truely natural CHAP. IV. Of the nature and vertues of simple Waters I It will be necessary for the better conceiveing of the nature and vertue of mineral waters in particular to speak something of the nature and virtues of water in generall or of simple water which is an element as saith Sendivogius most heavy full of unctuous flegme and is more worthy in its kind than the earth it is without volatile but within fixed cold and moist attempered by air It is the Sperm of the world in which the seed of all things is preserved and it is the keeper of every thing It is called by the ancients {non-Roman} {non-Roman} {non-Roman} {non-Roman} {non-Roman} Thales as saith Aristotle called one and the same water the beginning of all things Empedocles also believed that of water were all things made Hippon also saith Aristotle called it the soul of things as if it were the life of them which made Hippocrates say that water and fire were the principles of life and especially water for saith he many animals may want fire but none can well live without water Theophrastus affirms that water is the matter of all things And indeed if water were accurately anotamized you should clearly see that both vegetables minerals and animals are generated of water but of this I have treated more largely elss where I shall not now stand to repeat especially since my purpose here is chiefly to speak of the medicinal virtues of water Now we must know that water is twofold for either it is simple or mineral which we more usually call medicinal Water is called simple not according to its own nature but to our sense or being compared with that which is mineral and of this there are five kinds viz. rain fountain pit river and standing water I shall not here stand to prove whether or no water be nutritive or be onely a vehiculum of aliments as Galen would have it because in another treatise I have cleerly shewed how vegetables animals and minerals are generated of and increased by water which hath such strange dissimilary or heterogeneal parts as can scarce be believed by those who never saw the spagyrical anatomy thereof or curiously examined the production of all natural things I shall insist onely upon the medicinal use thereof as being administred either to prevent or cure the distempers of the body Simple water which cooles and moistens is either taken inwardly or used outwardly It is taken inwardly either warm or cold The vertues of warme-water taken inwardly are these which follow viz. 1. It doth by reason of its warmth cause nauseouseness and it is drank in a greater quantity to cause vomiting in head-ach proceeding from drunkenness and in any other ilness of stomack but with this caution that they that have very cold weak and laxated stomacks must abstain from this kind of vomit because warm water doth moisten very much and so by consequence would laxate tht stomack more than it was before Also it is not to be administred to those that are accustomed to drinking of water for them it will not move to vomit but remain in the body and weaken the vessels upon the aforesaid account of its extream moistening 2. It allayes sharp acid and gnawing humours and cureth such symptoms as proceed from thence as saith Galen also it represseth the ebullition of choller and helps the inflammations of the throat and mouth caused thereby as saith Aetius 3. It cures the inflammation of the reins by altering of them if it be taken before meals Note that if warm water be given to cause vomiting it must be administered to the quantity of a pint or two or of as much as will be sufficient thereunto But if it be used for qualification it must be taken to the quantity of a cup onely which may not cause nauseousnes The use and vertues of cold water are these viz. 1. It conduceth to long life in regard it condenseth the spirits saith the Lord Virulam And indeed water was the usual drink of the ancients who lived long 2. It repels by reason of its coldness and is thefore effectual against divers distempers it forceth crudities out of the stomack and as saith Aetius promotes the operation of any medicine that is taken and works not besides it suppresseth the fuming of vapours to the head as saith Dioscorides and Mesues and being drunk at bed-time causeth quiet rest as saith the Lord Virulam in his learned treatise de vita et morte by suppressing the ascent of vapours to the head 3. It allayes extream hot distempers whether they be in any particular part as in the stomack liver c. or in the
bituminous vapours Ob. What is the reason that seeing this water hath passed lately through the bituminous burnings as it appears by its fresh odour of the same should be cold and not hot as hot Baths are Sol. 1. It was the opinion of Fallopius that such kind of waters proceed from a remote fire but passing through narrow passages retain their full odour and tast which cannot be vanished by the way any otherwise than smoak through a Chimney or pipe although by the length of its passage it may loose its heat 2. Though the fire be near to the superficies of the earth where this water breaketh forth yet it is very probable that the coldness thereof may proceed from a mixture of a cold spring before the breaking forth thereof Neither let it seem strange to any that cold springs and hot may be so near together in the bowels of the earth for just above the head of this Sulphur-well there arise two cold Springs which meet and run down within a few feet of the head of the same And Mr. Jones in his treatise of Buck-stones Bath in Derbishire saith that the cold Springs and hot Springs are so near that a man may put one finger in the cold and another in the hot Having in some measure declared unto you the cause of this Sulphur-well viz. of its saltness bitterness and sulphurious odour I shall in the next place give an account of some experiments and observations which I made and they are these viz. 1. If Silver be put into this water it is thereby tinged first yellow and then black but Gold is not all discoloured thereby 2. If this water be a little boiled it looseth its tinging property and also stinking odour 3. It coagulates milk if it be boiled therewith 4. The distilled water thereof looseth its odour and doth not coagulate milk 5. If the water be boiled it will still coagulate milk though it looseth its odour 6. Seven gallons yield by evaporation a pound of Salt which though at first black I have made as white as snow 7. This Salt coagulates milk also 8. This water kills worms and such kind of creatures presently if they be put therein 9. I filled two Vial glasses with this water in wet weather and stopt the one but the other I left open The water in that which was stopt within an hour or two became white and thick and within two or three dayes deposited a white sediment and the sides of that glass were furred the water in the other glass altered not 10. I filled two Vial glasses in fair weather whereof the one I stopt but the other left open the water in neither of them turned colour any whit considerably onely a kind of a thin whitish matter after two or three dayes fell to the bottom the water continuing very clear The water of that glass which was stopt retained its odour most 11. A pint of this water weighs two scruples i. e. fourty grains more than a pint of common Spring-water Note that the reason of its tinging white metals is not from any bodily Sulphur or bitumen mixt with it for the substance of them will not mix with water but swim on it as in the Spring at Pitchford in Shropshire and in Avernia in France and in divers other places but from the vapours or the subtile atomes efluvia's thereof which are mixed with the water and in boiling are evaporated The reason of its coagulating property is from some occult acidity in the Salt thereof which to sense is not perceptible onely by effect Out of the Salt is drawn a very good spirit of excellent vertue as I shall declare in the next Chapter Before I conclude this Chapter it will be worth taking notice that about 240 yards above the head of this Sulphur-well is a bog of about twenty yards diameter in which I digged a mineral kind of substance like the finders of Iron but almost rotten being corroded with some acid spirits of which that bog is full as also other places This mineral substance being cast into the fire burns blew and smels like Sulphur It is in tast like Vitrial and out of it Vitrial may be drawn nay in time it will be almost all resolved into Vitrial For I washed it and set it in a Cellar for two or three dayes and it was covered over with a white sweeetish Vitrial which I dissolved in water and set the said substance in a Cellar again and it contracted the like I did as before still reiterating this work till it was almost all turned to Vitrial In the said bog I found three or four sorts of waters viz. a Sulphur and Vitrioline and of each two sorts This was done the last day of my abode there and therefore I had not time to make any further search onely some of that mineral substance I took with me with which I tried the aforesaid experiments If any Gentleman would be pleased to expend some costs in digging up this bog and erecting some new Wels there he would prove an acceptable benefactor to his Countrey and it may be some new kind of water might be discovered hereby having yet more vertues than any of the former Note that the stink of this Sulphur-well is perceived afar off especially in moist and cold weather CHAP. XV Of the vertues and uses of the Sulphur-well together with directions and cautious for the taking of it THe use of this water is either inward or outward It being taken inwardly incideth abstergeth attenuates and resolves viscous thick humours and irritates every vessel of the body to expel whatsoever humours are offensive in them It openeth and removes those strong and obstinate obstructions whether in men or women that would not yield to any other Medicine whatsoever It doth oftentimes evacuate by stool great lumps of viscous slimy matter which was certainly whilest it was in the body the cause of some great distemper oppressure gripings tensions c. and which could hardly any other way be removed It heateth and quickneth the stomack bowels liver spleen bloud veins nerves and indeed the wholy body in so much that it consumes crudities rectifieth all cold distempers in all parts of the body causeth a good digestion cures the Dropsie Spleen Scurvy Green sickness Gout Cramp Epilepsie head-ach Vertigo Kings evil and all such Symptomes as proceed either from crudities cold viscous slimy or corrupt humours which obstruct distemper the stomack Bowels Messentery Liver Veins Brain and Nerves and these though of long continuance It killeth worms infallibly Note that this water must be begun by degrees and the full proportion be taken not at once but at several times exercise intermediating as in the taking of the Spaw The full dose or quantity to be taken must be proportioned according to the constitution strength of the party his bearing of it as also the humour offending the predominancy of the distemper and the aptness of the