1$ On a new Metal called Telluriaftt. 



and the cork L, to which the two former are fattened. At 

 c is a piece of lead, which ferves at the fame time to adjuft 

 the weight of the ball, and to keep it in an upright pofition. 



Fig. 3 is a plan of the cork, (hewing the apertures through 

 which the liquor defcends. The tubes D and F are each in 

 two parts, joined by pieces of elaftic gum, by which means 

 the apparatus admits of being moved without danger of 

 breaking. There is alfo a glafs rod e in the vefTel A for the 

 purpofe of ftirring the materials. This rod pafles tight 

 through a piece of gum elaftic (the mouth end of one of the 

 common bottles made of that fubftance), the other end of 

 •which is fitted clofe to the mouth of the veffel A, by means 

 of wire or catgut wound round it, to prevent the efcape of 

 the gr.s. 



XVIII. Extracl from a Memoir by P> of Jbr KLAPROTH, oh 

 a new Metal called Tellurium, reed in a public Sitting of the 

 Academy of Sciences at Berlin, fan. 25th, 1798. 



L R.OFESSOR Klaproth, on fubjecting to a chemical analy- 

 Cs the ore of the auriferous mine known under the denomi- 

 nation of the mine of white gold, aurum parcdoxum, metal' 

 htm vel aurum prcblematicum*, found in that mineral a metal 

 absolutely different from any hitherto known, and to which 

 he gave the name of tellurium, as a companion to the urani' 

 urn and titanium, new metals difcovered fome time ago by 

 the fame chemift. M. Mullcr of Reichenftein had, fo early 

 as 1782, fufpecled that this ore contained a peculiar metallic 

 fubftance, and his fufpicion was confirmed by Bergman, to 

 whom he had fent fome of the ore ; but on account of the 

 fmall quantity with which he had made his experiments he 

 would not venture to decide, whether it contained a new 



* This ore -s found in the mine called Mnriabi!f\x\ the Fatzbay moun- 

 tains near Zakthna ia Tranfylvania. See EmmerJing Element de Mine- 

 rfdoyjc, t. xi. p. 114, 



metal, 



