XXlt 



CONTENTS. 



VII. On the Combuftion of Phofphorus. — — P« 49? 



VIII. Pyrometrical EfTays to determine the Point to which Charcoal is a Non-con- 

 duftor of Heat. By Citizen Guyton. — — p. 499 



Comparative experiments with Wedgwood's pyrometer pieces, one of which was furrounded with . 

 charcoal, and the other with fand. The former piece was much lefs affefted by the heat than the 

 latter. 



IX. Defcription of an Air-pump of a new ConftrucElion. By the Rev. James 

 Little, of Lacken, in the County of Mayo, in Ireland. — p. ^or 



New Air-pump, with an horizontal barrel, folid pifton, and (lop-cock, between the barrel and the 

 receiver. 



X. Obfervations on Chemiftry and Natural Hiftory. By Profeflbr Van- 

 delli. — — — — p. 508 



Accounts of foffil Pruffian blue at Minas Geraes, in Brazil, and alfo of a very large mafs of native 

 copper. 



XI. On the Manufafture of Hats, and other ObjeSs. By a Correfpondent. 



P- 509 



XII. Extraft of a Letter from Citizen Ramond, Aflbciate of the National In- 

 ftitute of France, &c. to Profeflbr Haiiy, Member of the Inftitute at Paris, 

 refpefting two Excurlions to Mount Perdu, the moft elevated Summit of the 

 Pyrenean Mountains. — — ■ — p- 510 



Various obfervations, the moft remarkable charafter of which is that the moft elevated fummit of 

 the Pyrenean mountains is calcareous, and abounds with the remains of marine animals. 



XIII. An Abftraft of a Memoir on the Foffil Bones of Animals. By Citizen 

 Cuvier. ' — — — — P- 5 1 2 



Enumeration of extinft fpecies of animals, of which the bones have been found. Siberian mam- 

 mouth. Animal of the Ohio. Animal whofe teeth form turquois ftone. Rhinoceros. Giant 



floth of the royal cabinet at Madrid. Animal, or bear, of Bayreuth. of Montmartre ; 



of Verona. Stag of Ireland, &c. Beeves, &c. General Reflections. 



XIV. Extradt of a Memoir of Prouft, entitled Enquiries concerning Tin. 

 By Citizen Darcet. — — — P* 5^5 



Tin fubjefled to the aftion of ftrong nitric acid, or with the afliftance of heat, acquires 40 parts of 

 oxygen, and is infoluble ; but with weak cold nitric acid it acquires only 30 parts. ExperimenU 

 and obfervations refpefting the tranfitions of oxygen. 



XV. Scientific News, &c. . p. 518 



Conftruaion of lantern pinions of glafs for mill-work. Conftitution of the Ligurisn Inftitute. In- 

 ftitute of Cairo in Egypt. 



XVI. 



