THE QUARTERLY 
JOURNAL OF SCIENCE, 
EDITED BY 
JAMES SAMUELSON 
AND 
WILLIAM CROOKES, F.RS. 
VOLUME V. 
Gith Allustrations om Copper, Wood, and Stone. 
LONDON: 
JOHN CHURCHILL AND SONS, NEW BURLINGTON STREET. 
Paris: Leipzig: 
VICTOR MASSON ET FILS. ALFONS DURR. 
A 
nha 
MDCCCLXVIII. 
