Analyses of Books. 
[August, 
496 
moment in comparing Prof. Ramsay’s results with those of 
other experimentalists, nor do we learn what animal species were 
operated upon. 
In addition the number before us contains a memoir by Prof. 
Sylvanus Thompson, on “ Volta-eledtric Inversion;” one on 
“ Our Knowledge of the Nature of Chemical Phenomena,” by 
W. A. Shenstone ; on “ Brownian or Pedetic Motion,” by Pro- 
fessor Ramsay; on ‘‘Colliery Explosions,” by E. Withered; 
and on the “ Smoke Abatement Exhibition,” by Professor J. F. 
Main. 
We think our readers will agree with us that the Bristol 
Naturalists’ Society deserves well of all friends of Science, 
and is setting an excellent example to similar societies else- 
where. 
