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as to obviate frauds in it. For thefe purpofes an " Iii/lru6lion generale 

 ** pour la i'mdure dcs lames, et manufaduns de laine, de toutes nuances 

 " et pour la culture de drogues ou ingredients qu^on emploie" — was 

 prepared under his immediate direction, and publilhed in 1672. — The 

 refult anfwered his cares. We fee, to what perfection, particularly 

 with refpect to the dye, the woollen manufactures of France have 

 attained. 



From many fubftances to felecl the mofl ufeful ; of many modes 

 of performing the fame mechanical or chemical operation, to prefcribe 

 the mofl eligible, is the province of the natural philofopher, or the 

 chcmift. To attain thefe ends, the government of a country, which 

 wiflaes to thrive by arts and manufactures, ought to imitate what has 

 been fuccefsfuUy praCtifed in France. It fliould both offer rewards 

 for particular difcoveries and improvements, efpecially in the arts of 

 dying and bleaching ; and it fliould engage the man of fcience, by 

 every poffible incentive, to turn his attention to the manual arts. 



Chemiftry produces new fubftances, of ufe in manufactures. It de- 

 velopes the latent qualities of fubflances already known, and improves 

 and heightens the known ufeful properties of known fubflances. It 

 produces valuable fubftances, from the compofition and refolution of 

 new materials, of a more cheap and common kind, than that hereto- 

 fore employed. 



The induflry an4 fagacity of the French nation were exerted in the 

 prefent war, to difcover the mofl fure and fpeedy mode of generating 

 an abundant fupply of falt-petre. The kingdom was divided into 

 large diflriCts, each of which was continually furveyed, by an infpec- 

 tor, fkilful in arts and fciences. Under him was placed a former 

 director of the national adminiftration of faltpetre. It is flated, that fix- 

 teen millions of rough faltpetre were coUeCted in one year. It was 

 {till neceffary to refine faltpetre, for the purpofe of making gun-powder. 

 The former mode was too tedious and embarraffing, a new and more 

 advantageous proccfs, was invented by Monfieur Carny, which required 



lefs 



