Scientific Neivs, Accounts of Books, &*f . 383- 



rent of fulphurated hydrogen gas into nitro-murlate of antimony, kermes immediately falls 

 down, and afterwards when there is a fufBclent quantity of acid at liberty to difhydroge>- 

 Hate the fulphur, golden fulphur precipitates. The fame gas converts all the antimony: 

 contained in the acetite, and in the tartrite of this metal into kermes, which procefs af- 

 fords the means of procuring this preparation of a nature perfe£tly uniform. * 



Elajlic Refill in Opium. 

 M. Bucholz, a friend of Trommsdorf, has lately addrefled a very curious memoir to 

 him upon opium, which he means to infert in his next Journal. He found, in particular, 

 that opium contains a great quantity of elaftic gum. 



> 



Dif cover y of a New Earth in the Beryl of Georgen-Stadt. 



During the lad ten years a mineral has been found in the mines near Georgen-Stadt,. to 

 which, on account of its refemblance to the beryl, the name of that foffil had been given. 

 TrommsdorfF undertook to analyze this fubftance in the hopes of finding the glucine, but 

 inftead of that earth he found, a new one, or one which was different from thofe hitherto 

 known. 



ift. In its pure ftate it refembles- alumine.. 2. It is not more foluble either in the dry, 

 or humid way in the cauftic alcalis, than in their carbonates. 3. Ammoniac, whether 

 cauftic or carbonated, exercifes no aftion upon it. 4. It retains the carbonic acid but 

 weakly. 5. It acquires hardnefs, but not fapidity by fire. 6. It is not foluble in water. 

 7. It readily unites to acids with which it forms falts, which have little or no tafte. 8. 

 The earth, hardened by fire, diflblves in the acids with the fame eafe as that which has 

 not been fo treated. 9. It forms with fulphuric acid a fait little foluble, perfedly infipid, 

 which when it is acidulated diflblves without difficulty, and becomes cryftaDized in ftars. 

 10. Superfaturated with phofphoric acid it aiFords a very foluble fait. 11. Its acetite is of 

 very fparing folubility. Its other charadteriftics, as well as his procefs of analyfis, will be 

 detailed in the ifl part of the 8th Volume of his Journal. He has given the name of. 

 Jgufline to this new earth, from its property of forming with acids falts without tafte *. 



On the Method of hearing by the Teeth, 



Citizen Vidron, mufic mafter at Paris, has announced the difcovery of a method of ren- 

 dering mufic audible by perfons deaf and dumb from their birth. 



Citizens Hauy, Lacepede, and Cuvier, who were appointed by the National Inftitute to 

 examine this difcovery, made their report fthe 21 Mefiidor) in the year 8 (July 21, 

 180Q.) 



* See Annales de Chimie XXXII. 157, for an account of all the circumftances which determine the 

 formation of the different fulphurets of antimony. French editor. 



•f- The laft feven articles are tranflated from a letter of Trommsdorff in the Annales de Chimie XXXIV. 

 J30. 



Citizea . 



