[ 279 J 



IX. On a r,ew metallic Subfance contained in the Red Lead of 

 Siberia, to which it is propped to give the ^ame of ChrSme* on 

 account of the Property it pojejes of colou-ing every Sub/fance 

 combined with it. By M. Vau^UELIN. From the An- 

 nates de Chimie, Vol. XXV. 



iN proportion as the means of chemiftry are multiplied and 

 brought nearer to perfection, we have feen the number of 

 fimple bodies increafe< Scheele enriched this fcience with 

 two metallic fubltances and fevera'l acids, &c and Klap- 

 roth lately has made known two new metah aiid two earths. 

 It appear^, therefore, that we are not yet arrived at its ut- 

 moir, boundaries ; and, that when mankind (hall dig more 

 frequent. y, and to a greater depth in the eanh, many ba- 

 dies wi.l be difcovered, of which at prefent we have no idea. 

 I will even venture to afTert that when chemiftry, armed with 

 all the mean, it p flefies at prefent, (lull get pofleffion of all 

 the object preferved in cabinets with fo much care, as fo 

 many relicks which it is unlawful to touch, it will procure 

 ufeful difcoveries from bodies that at prefent excite only idle 

 curiofity. 



In the year 1789 M. M.-.cquart, a phyfician at Paris, to- 

 gether with myfelf, analyfed the red lead of Siberia, and 

 announced that this mineral was an intimate combination 

 of the fuper-oxygenated oxyde of le.id and the iron of alu-« 

 mine. Since that epoch Bindheim alfo faid, that he had 

 found in it copper, cobait, nickel, iron, and the molybdic 

 acid, home days ago I likewife fubje&ed this fubftance to 

 a new examination, and 1 hope to prove that every thing 

 hitherto published on this fubjecf. is incorrect; and though 

 I have not yet given to my refearches all the extent which I 

 propoe, for want of a fufficient quantity of matter, they 

 have been carried far enough to prove that the red lead con- 

 tains a new metallic acid poflefTing characleriiing marks 



* From x?*<«" colour. Ebit. 



T4 well 



