EIGHTEENTH YEAR OF PUBLICATION. 
AND ANNALS OF 
ASTRONOMY, BIOLOGY, GEOLOGY, INDUSTRIAL ARTS, 
MANUFACTURES, AND TECHNOLOGY. 
(MONTHLY, FORMERLY “THE QUARTERLY JOURNAL OF SCIENCE/) 
Articles. page 
1. The Evolution of the Spheres. 
By Charles Morris .. .. 121 
2. Offensive Manufactures : a Sug- 
gestion. By An Old Tech- 
nologist .. 131 
)n Living Organisms with 
reference to Polluted Waters. 
By J. W. Slater 138 
4. The Inconceivable as a Test 
of Truth. By F. H. Nash 145 
5. Experiments with the ‘‘Jump- 
ers ” of Maine. By George 
M. Beard, M.D 151 
Analyses of Books. 
Vivisection, its Opponents and 
Richard Wagner 154 
Analyses of Books — continued , page 
Peruvian Bark • •• *57 
The Journal of Speculative Phi- 
losophy ' I 59 
John Hopkins University, Balti- 
more I ^° 
The English Universities and 
John Bunyan 161 
Popular LeCtures on Scientific 
Subjects 161 
Tables for the Analysis of a 
Simple Salt 163 
History of Plastic Art from the 
most Ancient Times .. .. 164 
&c., &c. 
Correspondence 171 
Notes *77 
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