Scknttfic Newt, Accounts of Booh, isfc, 237 



the alumine were difcovered five parts of a fubflance having an earthy appearance, but 

 which does not form alum, and is apparently infoluble in the acids. He conceives this 

 fubftance may be filex. 



M. Klaproth has alfo difcovered a native phofphate of copper, and is at prefent employed 

 in analyfing this new combination of the phofphoric acid. 



•^* Tie tivo taji Ankles "were communicated by Letter from Klaproth to Vauquelin, Bulletin 



des Sciences, No, 45, Frimaire^ IX. 



On a neiu Manner of preparing the Acetic Acid, By Cit. BauolltER, Apothecary 



at Chartres. - ' 



THE procefs of Cit. Badollier confifts in diftilling a mixture of equal parts of fuiphate 

 of copper and acetite of lead, on the fand bath, in. a glafs retort adapted to a receiver. 



To examine the produce, Cit. Badollier made ufe of the pneumato-chemical apparatus. 

 During the operation, he. obtained only a fmall quantity of elaftic fluid, which he found to 

 have proceeded from the dilated air contained in the veffels. This air, tried by the ufual 

 tefts, afforded no indication of carbonic acid. As he prefumed that his acetic acid might 

 contain a portion of fulphuric acid, he tried it by a folution of the muriate of barytes, 

 which did not caufe any precipitate. 



It muft be obferved, thac the diftillation is fpeedily made, and requires a very moderate 

 heat ; and the acid thus obtained pofTefTed no empyreumatic fmell ; that the quantity, as 

 well as quality, were equal to thofe obtained by the diftillation of the acetite of copper ; 

 and that there was not, as in the old procefs, a portion of decompofed acid, communicating 

 a difagreeable fmell to the whole produft. On account of the time and fuel faved, the 

 price of the acid prepared by this new procefs, is to that obtained by the diftillation of the 

 acetite of copper, as i to 4. 



Annates de Chimiey XXXVII. Iir. , 



On the Thofphorefcent Properties of the Medullary Subjlance of the Brain' and Nerves, epitr ailed 

 from a Memoir of CiT. Cabarris, read before the National Injlitute: 



IT is well known that phofphorus is derived from animal matter. It is •alfo indeed 

 found in the mineral kingdom j but it may be queftioned whether its origin,- like that of 

 calcareous earths, may not always be referred to animal recrements; that at leaft which is 

 the dired product of thefe recrements, may be confidered as the immediate cfFeft of 



fenfuive . 



