Chemistry und Physics. 231 
rily for the manufacture of acid; but 20,000 tons of metallic 
copper are extracted from it by leaching—a not inconsiderable lye 
product. Dr. Lunge expresses surprise that similar mineral, 
which he supposes to abound in many localities on this side the 
Atlantic, has not here also taken the place of brimstone. The 
reason is that no mineral, as suitable, does exist within avail- 
the modifications in plant which the change involves. 
Another topic to which Dr. Lunge devotes several chapters, and 
full value of the Glover tower, when placed between the burner 
and the first chamber. There is an opinion prevalent that if the 
sulphurous acid from the burner be used in the tower to decom- 
unge, 
tst_ manufacturers to adopt the invention which Glover 
reely offered to the public, shows conclusively that these objec- 
e 
ull descriptions are given of Faur & Kessler composite plati- 
hum and lead stills,and of the modifications in shape, with conse- 
quent reduction in weight, which this innovation has driven the 
old platinum-still makers to adopt. 
All the volume needs is an index, which, strange to say, is al- 
together wanting. J. DOUGLASS. 
Chemistry of Common Life; by the late James F. W. 
time by A. H. Cuurcu, M.A. 592 pp., 8vo. New York, 1880. 
(D, Appleton and Co).—A great advance has been made since the 
Publication of the first edition of this work, by Pro essor Johns- 
res in them is probably greater. This clear exposition, by Pro- 
*ssor Johnston, of the many points in which Chemistry touches 
