THE QUARTERLY 
JOURNAL OF SCIENCE. 
EDITED BY 
JAMES SAMUELSON 
AND 
WILLIAM CROOKES, F.RS. 
VOLUME III. 
With Allustrations ow Copper, Wood, and Stone. 
LONDON: 
JOHN CHURCHILL AND SONS, NEW BURLINGTON STREET. 
Paris: Leipzig: 
VICTOR MASSON ET FILS. ALFONS DURR. 
—_$~34——— 
Baw 
MDCCCLXVI. 
