30 Biographical Account of [Acg, 



3/. Memoir en a particular Process for converting Phosphorus 

 into Phosphoric Acid without Combustion* Mem. Par. 1/80. 

 Published in 17S4. This is the method, by the action of nitric 

 acid, at present so well known. 



38. Memoir on Heat ; by MM. Lavoisier and de la Place. 

 Mem. Par. 1780. This is the well known memoir in which the 

 quantity of heat evolved by different bodies when burnt, &c. was 

 measured by means of the calorimeter. 



39. Report made to the Royal Academy of Sciences on the 

 Prisons, the 17 t h March, J 780; by MM. du Hamel, de 

 Montigny, le Roy, Tenon, Til/et, and Lavoisier. Mem. Par. 

 1780. 



•40. Experiments on the Composition of Water. Mem. Par. 

 1781. Published in 1784. This paper contains the result of 

 Lavoisier's experiments on the composition of water. It is 

 particularly valuable, on account of the historical details which 

 it contains. Among other facts, he mentions, that before he 

 began his own experiments he had been informed by Sir Charles 

 Blagden that the experiment had been already performed by Mr. 

 Cavendish, who had ascertained that water is a compound of 

 oxygen and hydrogen gas. 



41. Experiments on the Decomposition of I Vat er, showing that 

 this Liquid is not a simple Substance, and pointing out a Method 

 of obtaining Hydrogen Gas in abundance ; by MM. Meusnier 

 and Lavoisier. Mem. Par. 17S1. Published in 1784; and 

 read to the Academy on the 21st of April, 1784. The method 

 used was to pass water through red-hot iron. The iron was 

 oxidated, and abundance of hydrogen gas was evolved. 



42. Experiments on the Electricity absorbed by Bodies dining 

 their Conversion into Vapour ; by MAI. Lavoisier and la Place. 

 Mem. Par. 1781. Published in 178-4. 



43. Experiments on the Pleat produced during the burning of 

 different Combustibles. Mem. Par. 1781. Published in 1784. 



44. Remarks on Scheele's Book on Fire and Air. Mem. Par. 

 1781. Published in 1784. These remarks are chiefly confined 

 to the phenomena of calcination and combustion. 



45. Observations on the Method of Illuminating Theatres. 

 Mem. Par. 1/S1. Published in 1784. 



4G. Experiments on the Composition of the Acid called Fixed 

 Air, or Calcareous Acid, and w huh I for the future shall call 

 Carbonic Acid. Mem. Par. lJSI. Published in 1784. This 

 is another of the most important of Lavoisier's experimental 

 essays. He determines the composition of carbonic acid with 

 much industry; and the proportions which he assigns, 28 carbon 

 and 7- ox yg eI 'j are probably as near the truth as any other 

 results hitherto offered to the public. In this paper he distin- 

 guishes vital air by the term oxygen, which it at present bears. 



