THE 
POPULAR SCIENCE 
REVIEW. 
A QUARTERLY MISCELLANY OF 
ENTERTAINING AND INSTEUCTIYE ARTICLES ON 
SCIENTIFIC SUBJECTS. 
EDITED BY HENRY LAWSON, M.D. 
VOLUME XIV. 
LONDON: 
ROBERT HARDWICKE, 192 PICCADILLY; 
AND ALL BOOKSELLERS. 
1875. 
