THE 
POPULAR SCIENCE 
REVIEW. 
A QUARTERLY MISCELLANY OF 
ENTERTAINING AND INSTRUCTIVE ARTICLES ON 
SCIENTIFIC SUBJECTS. 
EDITED BY W. S. DALLAS, F.L.S. 
ASSIST ANT-SECRETARY OF THE GEOLOGICAL SOCIETY. 
NEW SERIES, VOLUME II. 
(VOLUME XVII. OF ENTIKE SERIES.) 
LONDON: 
HARDWICKE & BOGUE, 192 PICCADILLY. 
1878. 
