BG Biographical Account of [Aug. 



on the combustibility of the diamond ; while in the second 

 memoir he makes us acquainted with his own experiments on 

 the subject. He shows that the diamond is a combustible sub- 

 stance ; and that when it is burnt, a portion of the same gas 

 (carbonic acid) is formed, which makes its appearance after the 

 combustion of charcoal. This paper is interesting, not only for 

 this curious discovery, but because it seems to have led Lavoisier 

 to those experiments which afterwards made him acquainted with 

 the constituents of carbonic acid. 



7. Report made to the Academy of Scie?ices by MM. Fouge- 

 roux, Cadet, and Lavoisier, of an Observation communicated by 

 M. I' Abbe Backelay respecting a Stone supposed to have fallen 

 from the Clouds during a Storm. Jour, de Phys. ii. 251. This 



paper is curious. The opinion that the stone fell from the skies 

 is treated with contempt. There is an imperfect analysis of it, 

 from which it appears that it contained sulphur, iron, and earth. 

 Hence there is every reason to believe that it was similar to the 

 meteoric stones, with which at present we are so well acquainted. 



8. Observations communicated to the Royal Academy of 

 Sciences on a singular Effect of Thunder. Jour, de Phys. ii. 

 3H). 



9. A Letter to the Author of the Recueil sur V Atlas Mine- 

 ralogique de la France. Jour, de Phys. ii. 372. This letter 

 contains a variety of mineralogical remarks on Fiance, but too 

 imperfect to deserve to be transcribed. 



10. Expcrimc?it on the Freezing of Water. Jour, de Phys. 

 ii. 510. This is a verification of Dr. Black's theory of latent 

 heat, which had been already made known in Fiance by Des- 

 marets, and in Sweden by Wilke. 



1 1 . Observations on some Circumstances respecting the Crys- 

 tallizing of Salts. Jour, de Phys. 1773, p. 10. These relate 

 to some peculiarities respecting the crystallization of sulphate of 

 «oda, supposed by Baume to be owing to some alkalies lying at 

 the distance of several feet. Lavoisier showed that the inference 

 was inaccurate. 



12. Analysis of the White Lead Ore of Foidau.cn in Loivcr 

 Britanu, by MM. Bourdelin, Malouin, Macqucr, Cadet, 

 Lavoisier, and Baume. Jour, de Phys. hi. 340'. They demon- 

 strated that the opinion entertained by Sage, that this ore was a 

 muriate of lead, is incorrect. From the experiments which 

 they made upon it there can be little doubt that the ore examined 

 was carbonate of lead ; though there is no description sufficient 

 to make us acquainted with the characters which it possessed. 



13. First Essay of the great Burning Glass of M. Trudaine 

 established in the Garden of the Infanta in October, 177'J '■> by 

 M. Trudaine, de Montigny, Macqucr, Cadet, Lavoisier, and 



