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|Flying-Machines
|1
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|Modern Science and Modern Thought
|18
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|Twenty Years of Negro Education
|24
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|Relations of Science to the Public Weal I
|37
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|Two Wonderful Instruments
|51
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|A Free Colony of Lunatics
|56
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|The Art of Investing
|69
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|Concerning Clover
|73
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|The Problem of Higher Education
|84
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|Origin of Color in Animals
|94
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|The Motor Centers and the Will
|100
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|Home-Life of the Thibetans
|112
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|Sketch of Sir Lyon Playfair
|117
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|Editor's Table
|122
|-
|Literary Notices
|125
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|Popular Miscellany
|135
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|Notes
|143
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|The Scientific Study of Religions
|145
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|Postal Savings-Banks
|160
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|The Refracting Telescope
|169
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|Thomasville as a Winter Resort
|188
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|The Spirit and Method of Scientific Study
|192
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|The Social Life of Arctic Birds
|209
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|Neuter Insects
|217
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|Masson's Interpretation of Carlyle
|224
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|Relations of Science to the Public Weal II
|236
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|The Uniformity of Nature
|248
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|Sketch of Professor Alpheus Hyatt
|261
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|Correspondence
|268
|-
|Editor's Table
|269
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|Literary Notices
|272
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|Popular Miscellany
|281
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|Notes
|287
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|Inoculation Against Hydrophobia
|289
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|The Origin of Primitive Money
|296
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|Progress in Tornado-Prediction
|307
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|The Varieties of the Human Species
|315
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|Communal Societies
|325
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|Fish Out of Water
|334
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|The Flower or the Leaf
|342
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|The Study of the Relations of Things
|353
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|Agatized and Jasperized Wood of Arizona
|362
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|Nonconformity
|367
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|A New Field of American History
|371
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|Natural Heirship: Or, All the World Akin
|377
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|Science in its Useful Applications
|388
|-
|The Physiology of the Feet
|395
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|Sketch of Frank Buckland
|401
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|Correspondence
|407
|-
|Editor's Table
|410
|-
|Literary Notices
|412
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|Popular Miscellany
|420
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|Notes
|429
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|The Improvement of East River and Hell Gate
|433
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|The Interpreters of Genesis and the Interpreters of Nature
|449
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|Recent Experiments in State Taxation
|460
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|Bishop’s Ring Around the Sun
|466
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|The Influence of Inventions Upon Civilization I
|474
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|The Musket as a Social Force
|485
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|Discrimination in Railway Rates I
|494
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|Acclimatization
|507
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|Instinct as a Guide to Health
|517
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|The Increasing Curse of European Militancy
|521
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|Medical Practice in Damaraland
|526
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|The Problem of Photography in Color
|531
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|Women in Astronomy
|534
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|Sketch of Dr. W. B. Carpenter
|538
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|Sketch of James B. Eads
|544
|-
|Editor's Table
|554
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|Literary Notices
|556
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|Popular Miscellany
|565
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|Notes
|574
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|Biological Teaching in Colleges
|578
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|Discrimination in Railway Rates II
|586
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|A Thinking Machine
|596
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|Health and Sex in Higher Education
|606
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|Proem to Genesis
|614
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