3^4 Proceedings of Philosophical Societies. [May, 



Sulphur , . . 59 



Charcoal . . , 29 



Hydrogen 6 



Azote , 7 



100 



But he found m his products more sulphur and charcoal than he 

 had employed in his experiment. 



M. Thenard resumed the first method of Cluzel, which, 

 being much less complicated, promised more decisive results. 

 By making the liquid of Lampadius pass more slowly over 

 copper in hot tubes, he completely decomposed it into 85 or 86 

 sulphur, and 14 or 15 charcoal, without either azote or hy- 

 drogen. 



It will be seen in our preceding reports that M. Delaroche 

 was employed in ascertaining by new experiments the phenomena 

 which animals present when exposed to a high temperature. He 

 ascertained that the cutaneous and pulmonary evaporation was 

 one of the causes which prevented animals from assuming com- 

 pletely the temperature of the surrounding medium ; but that 

 they did not preserve their own temperature unaltered, as had 

 been said, but became hotter by degrees. But it was observed 

 that if the temperature of animals increased as that of the sur- 

 rounding medium, they ought to reach a still higher temperature, 

 because to that of the medium they ought to join that which is 

 produced by respiration. 



M. Delaroche, therefore, wished to determine the difference 

 which the result" of respiration, or in other terms, the absorption 

 of oxygen, would undergo in an air more or less heated, and he 

 found it so small that it is difficult to draw any conclusion. It is 

 in the proportion of five to six. M. Delaroche conceived that 

 there might be no connexion between the frequency of respira- 

 tion and the chemical phenomena of that process^ for in a hot 

 air the number of respirations was greatly increased. An inte- 

 resting remark is, that cold blooded animals show a much greater 

 difference than others, and that heat sensibly increases the 

 activity of their respiration — a fact which may assist us to ex- 

 plain several phenomena of their economy. 



The calculi which occasionally form in the gall bladder, and 

 which have hitherto resisted all the skill of the physician, are 

 usually composed of the substance called adipocire by chemists, 

 because its characters resemble both those of tallow and of wax. 

 But it appears that they are likewise subject to vary in their 

 nature; for M. Orsila, a doctor of medicine, has analysed some 

 quite different, which contained no adipocire, but were composed . 

 of yellow matter, green resin, and a small quantity of picromeL 



