suddenly cooling it in a Body that is neither a liquor, nor so much as moist. A tryal of that Nature I remember I have seen made. And however by the operation that Water has upon steel quenched in it, whether upon the Account of its coldness and moisture, or upon that of any other of its qualities, it appears, that water is not alwaies so inefficacious and contemptible a Body, as our Chymists would have it passe for. And what I have said of the Efficacy of Cold and Heat, might perhaps be easily enough carried further by other considerations and experiments; were it not that having been mention'd only upon the Bye, I must not insist on it, but proceed to another Subject. _ERRATA._ Pag. 5. line. 6. read _so qualify'd_, 15. 19. _Ratiocinations_, 25. 15. _for a_, 33. 17. in a parenth. (_that is no more_), 51. 24. _besides another Caput_, 79. 10. _employ_, 86. 13. _structure_, 97. 13. _Sack_, ibid. 22. _Sack_, 104. 29. instead of _appear it, will_, leg. _appear, it will_, 118. 20. _leasure_, ibid. _principal_, 126. 20. _and till it suffer_, 129. 3. leg. in parenth. (_notwithstanding, &c._ 131. 15. _so_, 144. 15. [Greek: Synchysis], 151. 5. _nor have been resolved_, 180. 25. _Magistram_, 185. 15. _lately_, 188. 15. _tunned_, 200. 1. _intolerable_, ibid. 2. _in_, 209. 21. _tegularum_, 210. 7. _distill'd from_, 215. 25. dele _the_, 220. 1. _bodies_, 228. 11. [Transcriber's Note: 21.] _fugitive_, 231. 17. instead of _all_ lege _a pound_, 237. 6. _Chymist_, 248. 18. _Ashes off_, 251. 23. _Deopilative)_, 259. 6. _it self_, 269. 10. [Greek: ousia analogos], _ibid._ [Greek: astron stoicheio], 276. 25. make a parenth. at the words, _by the_, and shut it after the words in the 27. line _at all_, 280. 11. _Corals_, 288. 6. _ascribes_, 294. 22. _porosity_, ibid. 28. _noted_, 296. 1. _Bodies_, 305. 8. _(attended_, 307. 12. dele _to_, 308. 12. _devisers_, 312. 14. _and_, 313. 3. _too_, 314. 24. _fugitivenesse_, 333. 13. _origine_, ibid. 24. _contrivance of_, 339. 1. _Nay, Barthias_, 142. [Transcriber's Note: 342.] 3. _in; I will_, 350. 26. _absurd_, 356. 11. [Transcriber's Note: 21.] _Goutieres_, 358. 6. _antea_, 360. 1. _compertissimum_, ibid. 18. _Joachimica_, ibid. 19 _graminis_, ibid. 23. _sua_ [Transcriber's Note: this appears to be correct on the original page 360], 362. 6. _Dutch account_, 363. 2. _diggers)_, ibid. 11. and 12. lin. read _damp as the Englishmen also call it_, 366. 25. _a height_, 368. 19. _in use_, 370. 9. _latter; And_, ibid. 24. _Water; I_, 377. 22. _Rest_, ibid. 25. _know)_, 378. 23. after _Aggregate_ insert _or complex_, ibid. 27. dele ), ibid. 28. dele ), 379. 4. before _as_ begin a parenth. which ends lin. 9. at _Gold_, ibid. instead of _Which_, put _This_, ibid. 12. with the word _Texture_ should be connected the next line, _Though_, and this word _Though_ is to have put before it a parenthesis, which is to end at the word _Fluid_ in the 16th. line, 383. 3.