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|The Effects of Protection
|1
|-
|Paleolithic Man in America: His Antiquity and Environment
|20
|-
|Habits of the Great Southern Tortoise
|37
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|Every-Day Life of Indian Women
|43
|-
|Altruism Economically Considered
|53
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|The Problem of a Flying-Machine
|69
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|Sun-Power and Growth
|77
|-
|Ainu Family-Life and Religion
|81
|-
|The Prolongation of Human Life
|92
|-
|Problematical Organs of Sense
|101
|-
|Four-Handed Sinners: A Zoological Study
|108
|-
|Sketch of Edward Atkinson
|113
|-
|Correspondence
|122
|-
|Editor's Table
|124
|-
|Literary Notices
|127
|-
|Popular Miscellany
|133
|-
|Notes
|142
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|The Psychology of Deception
|145
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|New Light on a Lunar Mystery
|158
|-
|The Pine-Tree Lizard
|162
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|The Last Stages in the Genealogy of Man II
|171
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|Atomic Worlds and their Motions
|183
|-
|Evolving the Camel
|192
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|Beliefs About the Soul
|202
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|The History of a Doctrine I
|212
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|Infant Mortality and the Environment
|221
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|The Origin of Forest-Groupings
|229
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|Chinese Marriage Customs
|241
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|Native Life in British Borneo
|246
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|Animal Arithmetic
|252
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|Sketch of F. A. Vulpian
|262
|-
|Editor's Table
|267
|-
|Literary Notices
|270
|-
|Popular Miscellany
|278
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|Notes
|286
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|The Guiding-Needle on an Iron Ship
|289
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|House-Drainage from Various Points of View
|310
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|Town-Life as a Cause of Degeneracy
|324
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|Sea-Lions and Fur-Seals
|330
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|Genius and Talent
|341
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|Inventional Geometry
|357
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|Science and its Accusers
|367
|-
|The Suanetians and their Home
|380
|-
|The History of a Doctrine II
|385
|-
|Gauss and the Electric Telegraph
|396
|-
|The Sacrifice of Education
|399
|-
|Sketch of Moses Ashley Curtis
|405
|-
|Correspondence
|411
|-
|Editor's Table
|416
|-
|Literary Notices
|419
|-
|Popular Miscellany
|426
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|Notes
|431
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|New Chapters in the Warfare of Science: Medicine I
|433
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|Physical Training of Young Children
|449
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