EIGHTEENTH YEAR OF PUBLICATION. 
AND ANNALS OF 
ASTRONOMY, BIOLOGY, GEOLOGY, INDUSTRIAL ARTS, 
MANUFACTURES, AND TECHNOLOGY. 
(MONTHLY, FORMERLY “THE QUARTERLY JOURNAL OF SCIENCE.”) 
voi. in. gsa 
No. LXXXV. 
J" A-TTITA-^Y" 
1.83 1. 
CONTENTS 
ByJ.H. 
Articles. 
1. Life and its Basis. 
Barker, M.A. 
2. Atlantis and Lemuria : the 
Distribution of Land and 
Sea 
3. Industrial Training. By An 
Old Technologist .. 
4. Comparative Psychology 
5. The Materialistic Origin of the 
Sexes. By Andrew Dewar, 
Author of “ Origin of Crea- 
tion ” 
Analyses of Books. 
Ponds and Ditches 
Siberia in Europe : a Visit to the 
Valley of the Petchora . . 
page 
18 
25 
33 
37 
38 
PAGE 
Analyses of Books — continued. 
History of North-American Pin- 
nipeds: a Monograph of the 
Walruses, Sea-lions, Sea-bears, 
and Seals of North America .. 40 
Unconscious Memory 41 
The Power of Movement in 
Plants 46 
Geschichte der Mathematischen 
Wissenschaften 
Bulletin of the United States 
Geological and Geographical 
Survey of the Territories 
47 
48 
Correspondence 49 
Notes 55 
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