Description of the Arseniates of Copper, and of Iron, from the County 

 of Cornwall. By the Count de Bournon page 43 



Analysis of the Arseniates of Copper, and of Iron, described in the pre- 

 ceding Paper; likewise an Analysis of the red octaedral Copper Ore 

 of Cornwall ; with Remarks on some particular Modes of Analysis. 

 By Richard Chenevix, Esq. M.R.I.A 45 



A Historical and Anatomical Description of a doubtful amphibious 

 Animal of Germany, called, by Laurenti, Proteus Anguinus. By 

 Charles Schreibers, M.D 47 



Observations tending to investigate the Nature of the Sun, in order to 

 find the Causes or Symptoms of its variable Emission of Light and 

 Heat ; with Remarks on the Use that may possibly be drawn from 

 Solar Observations. By William Herschel, LL.D. F.R.S 49 



Observations on the Structure, and Mode of Growth, of the grinding 

 Teeth of the Wild Boar, and Animal incognitum. By Everard 

 Home, Esq. F.R.S 52 



Account of some Experiments on the Ascent of the Sap in Trees. In 

 a Letter from Thomas Andrew Knight, Esq. to the Right Hon. Sir 

 Joseph Banks, Bart. K.B. P.R.S 53 



Additional Observations tending to investigate the Symptoms of the 

 variable Emission of the Light and Heat of the Sun ; with Trials to 

 set aside darkening Glasses, by transmitting the Solar Rays through 

 Liquids ; and a few Remarks to remove Objections that might be 

 made against some of the Arguments contained in the former Paper. 

 By William Herschel, LL.D. F.R.S 55 



On an improved Reflecting Circle. By Joseph de Mendoza Rios, Esq. 

 F.R.S 56 



Observations and Experiments upon Dr. James's Powder; with a 

 Method of preparing, in the humid Way, a similar Substance. By 

 Richard Chenevix, Esq. F.R.S. M.R.I.A 57 



Case of a young Gentleman, who recovered his Sight when seven Years 

 of Age, after having been deprived of it by Cataracts, before he was 

 a Year old; with Remarks. By Mr. James Ware, Surgeon 58 



An Account of some Galvanic Combinations, formed by the Arrange- 

 ment of single metallic Plates and Fluids, analogous to the new Gal- 

 vanic Apparatus of Mr. Volta. By Mr. Humphry Davy 59 



A Continuation of the Experiments and Observations on the Light 

 which is spontaneously emitted from various Bodies ; with some Ex- 

 periments and Observations on Solar Light, when imbibed by Can- 

 ton's Phosphorus. By Nathaniel Hulme, M.D. F.R.S. and A.S.... 60 



Experiments on the Chemical Production and Agency of Electricity. 

 By William Hyde Wollaston, M.D. F.R.S 61 



Further Observations on the Effects which take place from the De- 

 struction of the Membrana Tympani of the Ear ; with an Account 

 of an Operation for the Removal of a particular Species of Deafness. 

 By Mr. Astley Cooper 62 



