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|Halley's Comet
|5
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|The Darwin Celebration at Cambridge
|23
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|Darwin's Probable Place in Future Biology
|32
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|The Evolution of Man and its Control
|49
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|College Diversions
|71
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|The Theory of Style
|76
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|The Transmission of Disease by Money
|86
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|How Could an Explorer Find the Pole? |89 |- |The Progress of Science |99 |- |colspan=2| |- |Scientific Faith and Works |105 |- |The Swedish Kristineberg Marine Zoological Station |125 |- |Ernst Haeckel: Darwinist, Monist |136 |- |The Knowledge of Good and Evil |143 |- |Australian Morality |147 |- |The Geographic Aspect of Culture |158 |- |The Scientific Presentation of History |170 |- |The Nature of Fatigue |182 |- |A Great Marine Museum |196 |- |The Progress of Science |203 |- |colspan=2| |- |Insects and Entomologists: Their Relation to the Community at Large I |209 |- |The Second Law of Thermodynamics: Its Basis in Intuition and Common Sense |227 |- |Climate in Some of its Relations to Man |246 |- |The Structure of the World-Stuff |269 |- |The Relation of the Law to Public Health |280 |- |International Coinage |287 |- |The Hubbard Glacier, Alaska |293 |- |The Progress of Science |306 |- |colspan=2| |- |Laws of Diminishing Environmental Influence |313 |- |The Leading School of Tropical Medicine |337 |- |The Growth of a Language |344 |- |The Denominational College |358 |- |The Trial of an Old Greek Corn-Ring |370 |- |The Population of the United States |382 |- |Preservation of the Fisheries on the High Seas |389 |- |The Research Work of the Tortugas Laboratory |397 |- |The Progress of Science |412 |- |colspan=2| |- |Heredity |417 |- |Sneezing, Sea-Sickness, Pain |429 |- |The Circulations of the Atmospheres of the Earth and of the Sun |437 |- |The Reorganization of American Farming |462 |- |Insects and Entomologists: Their Relation to the Community at Large II |467 |- |Ancient Climates of the West Coast |478 |- |Some Tests of Academic Efficiency |487 |- |The Prophecy of Francis Bacon (1560-1910) |495 |- |John Dalton and his Achievement: A Glimpse Across a Century |500 |- |The Progress of Science |515 |- |colspan=2| |- |Scientific Work of the Department of Agriculture |521 |- |Instinct and Intelligence in Birds I |532 |- |Two Preventable Causes of Insanity |557 |- |The Indian Fairy Book |565 |- |Scenery, Soil and the Atmosphere |570 |- |The Paleontologic Record I: The Paleontological Society Conference Papers |581 |- |Adequacy of the Paleontologic Record I |582 |- |Adequacy of the Paleontologic Record II |586 |- |Interdependence of Stratigraphy and Paleontology |589 |- |Biologic Principles of Paleogeography I |591 |- |Biologic Principles of Paleogeography II |601 |- |The Case of Harvard College |604 |- |The Progress of Science |615 |- |Index |621 |- |}Popular Science Monthly Volume 76