THE 
POPULAR SCIENCE 
REVIEW. 
A QUARTERLY MISCELLANY OF 
ENTERTAINING AND INSTRUCTIVE ARTICLES ON 
SCIENTIFIC SUBJECTS. 
EDITED BY HENRY LAWSON, M.D. 
VOLUME IX. 
VMS * 1 
* &:m 
• db 
A 
LOiriTON: 
ROBERT HARDWICKE, 192 PICCADILLY; 
AND ALL BOOKSELLERS. 
1870. 
