ACCOUNT OF BOOKS. ' 7/f 



ceflTary to redore the colour ; for it revives in vacuo as well as 

 in the open air. 3. Caloric, without the contact of light, is 

 detrimental to the return of the colour, inftead of contributing 

 to it, and even deftroys it 4. Finally, the inteftine motion of 

 its parts, however exerted, is fufficient to re-produce the co- 

 lour more or lefs fpeedily, according as there are more or lefs 

 light and motion. 



Effai fur k Calorique. — An Effay on Caloric ; or, Inquiries into SocquetonCa- 

 the Phyfical and Chemical Caufes of the Phenomena exhibited by ,onc * 

 Bodies fubjecled to the A&ion of the Igneous Fhdd, with new 

 Applications of them ref peeling the Tlieory of Refpiration, Ani~ 

 mal Heat, the Origin of Volcanic Fires, fyc. ; to which are 

 added, An Effay on the Anomalies of Chemical Affinities ; Expe- 

 riments and Obfervations on Bell-metal; and a Defcription of 

 the famous Alum Mine oj Souvignaco, in IJlria, and of tlie 

 Proceffes employed for extracting and purifying the native Alum : 

 by Jofeph-Mary Socquet, M. D. formerly Phyfician to the 

 Army. Paris. 8vo. 473 p. Price 5 fr. 1801, 



Natural philofophers are yet far from being agreed on the 

 nature of caloric, and the phenomena afcribed to it. In this 

 volume- Dr. S. has publifiied eight eflays on the fubject. 



The 1ft treats of caloric confidered in its chemical and phy- 

 fical relations to other bodies, whence may be deduced the 

 principal phenomena they exhibit when fubje&ed to the action 

 of this fluid ; as their capacity for caloric, their dilatation, fu- 

 fion, gafification, tendency to equilibrium of temperature, &c. 



In the 2d the author turns his attention to the caufe of the 

 perpetual production of heat by the fri&ion of bodies, and of 

 the confequences which Count Rum ford deduced from his 

 own experiments on the fubjeft, 



In the 3d he treats of the conducting power of liquids for 

 caloric. 



The 4th contains new views' on refpiration, and the caufe 

 of the production of heat in Warm-blooded animals. 



The fubjeft of the 5th is the nature of volcanic fires, the 

 caufes of which the author deems independent of any local 

 combuftion> produced by the decompofition of water or of 

 any other oxide, or by fubmarine. or lubterranean currents of 

 air. 



The 



