(109 ) 
derfii! efFefis, in melting Swords without hurting their Sea- 
bards, in killing Animals, in occafioning very tempeftuoiis 
Winds, drc. 
This is folio w'd by an Explication of the manner, how Heat 
is raifed in ^uick-limeby powring water upon ii ; which he 
deduces from two contrary Salts, the Acid and Alcali, work- 
ing upon one another ; So that llaked Llme.feems to him ro.be 
nothing eife but a Magiftery confiicuted by two contrary Sa:ts 
and a ftony Earch united together. Where he adds the reafon, 
why Quicklime is not heated by the affufion of welJ-rediii- 
ed Spiritx)f wine , or of Spirit of Turpentine, or any other 
Sulphureous liquor j vtz,. becaufe fuch liquors are unfit to dif- 
folve the Salts contam'd in the Lime. To which he fu bjoyns 
adifcourfe about the Conveningof contrary Salts both with 
themfelves, and with other things ; as alfo concern ng Frec/pi- 
tation\ giving wittia! a caution, not rafhly to prefcribe contra- 
ry Salts in the fame Medicine, left the one.deftroy ^he efficacy 
of the other , or change it into a third , quite different from 
what it was before. 
After this,he makes a digreflion to examine ihthath-vpaters; 
judging them to be impregnated with a Kind of Vitriolat Tar- 
tar, or an Aluminous Salt ; which Salts yttjse [aith^ do not de- 
ftroy one another,but either of them falls into an efFervefcence 
with its contrary , for as much as thofe Salts are fo imperfefl", 
that joy ned together they are not able ro deftroy one another^ 
So that he denyeth there is any folution either of Niter ot 
Sulfhur in thofe wat€rs,as hath been hL herto believed^ declar- 
ing i to be a cheats that Silver coins immerfed in thofe waters 
ace tm^tdyellow \ for as much as they are rather tinged i?Uck^ if 
immediately they be pur inr-othem without any previous daw- 
b ng them with a falino fulphurenus dung. Nor will he admit 
thefe waters to be hea ed bv any fubrerraneal fire,hut with the 
lea ned Jordamffkns that heat cobe produced bv a Fermenta- 
tion made in he bowels of the Earth : To explain which , he 
defcends to confider the Origin of Fomtams.woH of which he 
conceives with many others, to have their rife from Rain-w^a- 
ters, and nor from te Sea ; which be-ngfuppofed, he afTerts, 
That the Air and the P^ain- waters paffing deep into the porous 
Earth. 
