24 €)ftt>e^eti)antcalflDngtne 



third or fourth part of Gold in a glafs- 

 Egg, is kept in convenient degrees of 

 fire, the whole matter, and conse- 

 quently the Gold, will-, by the mutu- 

 al operation of the included Subftan- 

 ces, be fo changed, that not onely 

 ? twill circulate up and down in the 

 glafs, but, in cafe the digeftion or de- 

 co&ion fhould be broken off at a cer- 

 tain inconvenient time, the Gold 

 would be quite fpoil'd, being, by the 

 paft and untimely-ended operation-, 

 made too Volatile to be reducible a- 

 gain into Gold: whereas,if the decoc- 

 tion be duly continued unto the end, 

 not onely the Gold, but all the Philo- 

 fophical Mercury or Menftruum will 

 be turned intoa Sulphur or powder of 

 a wonderfully fixt nature. I know :s 

 there are feveral Chryfop^ans, that 

 fpeak much otherwife of this Opera- 

 tion, and tell us, that the Gold im- 

 ployed about it muft be Philofophick 

 Gold : But I know too, that there 

 are divers others (and thofc too none 

 of the leaft candid or rational) that 

 fpeak of it as I have done 5 and That 



