182 Notices respecting New Book%. 



accurate, useful, and superb plates, whereby science has 

 been enriched and embellished. 



The three remaining volumes are the entire works of some 

 of the most eniinent writers on the preservafion of health 

 and the prolonoaiion of life, with the correspondences on 

 this subject of several of the tirst mt.'dical characters in Eu- 

 rope : this part therefore contams much new and origi- 

 nal information to the public, especially in what relates to 

 exercise, where the training ot- boxers, horses, &c. is amplv 

 detailed ; so that we must recommend this work to all classes 

 of persons. The physician already conversant on the sub- 

 ject frcm his own lihrarv, will not regret to see similar pub- 

 licaiioiis in a similar dress, and assembled. In the present 

 work he will also find much new information for his medi- 

 tation and iirpprovement. 



Thcorij gcnirole de V Electriciie, da Galvmiisme, et du Mng- 

 mitisme. Par H. Azais, Author of Essaisur le Monde, 

 Mtmoire sur le Mouvtment moleculaire et sur la C/ialeur, 

 &'c. &c. 



M. Azais is, we understand, a candidate for the prize, 

 offered by the emperor Napoleon, for the best memoir on 

 the above subject. His work is preparing for the press at 

 Paris ; in the mean time he has pubhshed ihe following syl- 

 labus of its contents : 



" When light and caloric, in a sufficient quantity, arc 

 united to the elements of water, they make them enter into 

 a state of gaseous expansion, and produce with them the 

 two gcases, oxygen and hydrogen. 



" If afterwards the progress of expansion continues, the 

 two gases are separated and attenuated ; and when each 

 gaseous molecule is reduced to the utmost tenuity of which 

 it is susceptible, it becomes the molucule of the euctrical 

 fluid. 



" Thus there are two electrical fluids ; the oxyge^iated and 

 the hydrogcnated fluids. These two fluids are formed, com- 

 bined, and renewed incessantly; thev traverse perpetually, 

 and In an inverse ratio to each other, the envelope of the 

 earth — its atmosphere. They proceed continually from 



the 



