OF THE ORIGIN OF CHEMISTRY. 



" non habet honeftum, panni in ficlilibus vafis 

 " impofiti fupru ignem comburuntur. Is cinis 

 44 conjicitur in aquam, et additur ei argeritum 

 vivum, id autcm omncs micas auri corripit in 

 44 fe et cogit fecum coire : aqua dcfufa,cum id ia 

 44 pimnum infunditur, et ibi manibus prcmitur, 

 44 argentum per panni raritates proptcr liquc- 

 44 rcm extra labitur, aurum.compreffione coac- 

 44 turn intra purum invenitur *." What Vitru- 

 vius fays of the cloth, Pliny has written more 

 Particularly in thcfe words' " In pelles fubaclas 

 eHbditur,perquasfudoris vicedefluens purura 

 44 relinquit aurumf." Pliny ghes further an ac- 

 count of gilding by means of quicklilver, and of 

 the inarching for filvcr with the Lydian (lone J. 

 Pure g(j!d lias been faid to be extracted from 

 ochre, or orpiment, alfo, by Gains Caligula, a 

 'Have to avarice, though in inch fmall quantity 

 us not to defray the expcnce of the procefs . 



Petronius, Ipeuking of flexible glafs, relates, 

 44 Fuit faber.qui fecit phialam vitreani,qu:e non 

 44 frangebatur. Ad mi fl us ergo ad Citiarem ell 

 44 ci:rn fuo muncre, deinde fecit rcnorrigere C:e- 

 4< fari, et ilium In pavimentum projecit. C:rf:ir 

 * 4 \iui pote validius, quam expavit : at ille fiillu- 

 '* lit phialam dc terra: coHihi/*rat, 'anquam va- 

 " fum a:ncum. Deinde martiolum dc linu pro- 



tk T'.ilir, 

 * I., vii. c . 3. 

 L. xxxiii. c. d. 



I L xxxiii. c. b. * 



1., xxx.'ii. r. .. 



