42 7 



ciple, and might prove ufeful fubftitutes, for oak. bark, in the pro- 

 cefs of tanning leather. There are many other plants, which would 

 prove excellent ingredients for the preparation of dying fluffs. 



Mineralogy might difcover many ufeful fubftances, the perfect me- 

 tals, coals, cobalt, fuller's earth, ochres, clays and fands for potteries, 

 and the glafs manufactures, all thefe by furnifliing new objects and 

 materials of manufacture, would afford new fervices of employment 

 to an induftrious population. Cliemiftry, alfo, by producing different 

 fubftances for the purpofe of the dyer, the painter, and other 

 manufacturers and artifts, will greatly enlarge the catalogue, and ex- 

 tend the fphere of induftry. 



Chemiftry, will minifter to manufacturers, not only by producing 

 new fubftances, about which they may be converfant, but alfo by con- 

 tributing to their beauty and perfection, by improvements in the pre- 

 paration of various fubftances, employed in them, or in the procefs, 

 of working up and employing thofe fubftances. It may fuggeft; im- 

 proved modes, of employing various matters, which are offered to 

 the hand of art, by the mineral, the vegetable, and the animal king- 

 dom ; by communicating the refult of various experiments, on their 

 combinations, and decompofitions. Thus many important philo- 

 fophical facts, originally known only to the profound chemift, 

 may be brought forward, for the inftruction of painters, ja- 

 panners, dyers, printers, manufacturers of glafs, and hardware, 

 hatters, clothiers, book-binders, flioe-makers, brewers, diftillers, and 

 a multitude of others. By this means, for inftance, we may afcer- 

 tain the beft mode of preparing, and employing painters colours and 

 dying materials. We may difcover thofe ingredients, which, joined 

 with other colours, and dies, produce certain new derivative (hades 

 and colours, or improve the brilliancy of common colours, or beftow 

 on them* a fixednels and body. 



( 3 H 2 ) Thus 



* See Bancroft's Philofophy of Permanent Colours. 



