CONCERNING THE IDENTITY OF TELLURIUM, &C. (j$ 



wards eftablifhing the poffibility of reducing barytes, lime and 

 magnefia to metallic reguli,) had refolved to employ his con- 

 fiderable ftock of Tellurite and Uranite for the purpofe of fub- 

 jecting thefe two metals to a new and clofer examination. 

 He, therefore, firft prepared, according to Klaproth's manner % 

 a reguks of Tellurium, weighing feveral grains. This regulus 

 perfectly agrees with reguline antimony, only with refpect to 

 its phyfical properties, for inftance, in the fracture, colour, hard" 

 nefs, fpecific gravity; and fo likewife its oxyde perfectly re- 

 fembles the anthnoniumdiaphoreticumablutum (lixiviated white 

 oxyde of antimony by nitre.) However, it would be prema- 

 ture, without farther experiments, in which Major Tfcharfky 

 is at prefent engaged, directly to conclude that Tellurium is 

 nothing elfe but reguline antimony." 



*' Major Tfcharfky has alfo prepared many ounces of the Uranium. 

 oxyde of Uranium, and will in a fhort time reduce it to a 

 regulus of confiderable fize for the purpofe of farther expe- 

 riments." 



" Concerning the fecond point it relates only to an experi- Suppofrd gar- 

 ment of ProfeiTor Jordan, who, as in the galvanic experiment JV C efl ^ s of 

 for decom poling water, connected metallic wires immerfed in 

 water with the oppofite poles of a magnet, and obferved that 

 an oxydation of the wires was effected. But as this experi- 

 ment w r ould not fucceed in the feveral inftances in which it 

 was repeated, Major Tfcharfky and Captain Lethenyey are at 

 jsrefent occupied in preparing a large magnetic apparatus in 

 order to inftitute a regular feries of experiments on this fub- 

 jea." 



J. 



PoficripL Chevalier Landriani affirms that he has difcovered L-andriani's m»- 

 a method of copying old writings in the fame manner, as of owmss^^" 5 

 recently written papers, duplicates are taken by means of copy- 

 ing-machines. — He has alfo prepared an excellent indelible Indelible ink. 

 ink, the compofition of which he will foon publifh. 



J The procefs by which Klaproth eibtblifhed the Tellurium as 

 anew metal has been given in Nichclfon's Journal, vol. II. 4to. 

 J7J9, page 273. Tranfl. 



SCIENTIFIC 





