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Table of Contents

June 01, 1915; vol. 1 no. 6

Astronomy

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Confirmatory Experiments on the Value of the Solar Constant of Radiation
C. G. Abbot, F. E. Fowle, and L. B. Aldrich

PNAS June 1, 1915 1 (6) 331-333; https://doi.org/10.1073/pnas.1.6.331
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126 Parabolic Orbits of Meteor Streams
Charles P. Olivier

PNAS June 1, 1915 1 (6) 358-359; https://doi.org/10.1073/pnas.1.6.358
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Unsymmetrical Lines in Tube-Arc and Spark Spectra as an Evidence of a Displacing Action in These Sources
Arthur S. King

PNAS June 1, 1915 1 (6) 371-374; https://doi.org/10.1073/pnas.1.6.371
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The Direction of Rotation of Sun-Spot Vortices
George E. Hale

PNAS June 1, 1915 1 (6) 382-384; https://doi.org/10.1073/pnas.1.6.382
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Some Vortex Experiments Bearing on the Nature of Sun-Spots and Flocculi
George E. Hale and George P. Luckey

PNAS June 1, 1915 1 (6) 385-389; https://doi.org/10.1073/pnas.1.6.385

Genetics

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Variation of Flower Size in Nicotiana
T. H. Goodspeed and R. E. Clausen

PNAS June 1, 1915 1 (6) 333-338; https://doi.org/10.1073/pnas.1.6.333
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Parthenocarpy and Parthenogenesis in Nicotiana
T. H. Goodspeed

PNAS June 1, 1915 1 (6) 341-346; https://doi.org/10.1073/pnas.1.6.341
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Sex Ratio in Pigeons, Together with Observations on the Laying, Incubation and Hatching of the Eggs
Leon J. Cole and Wm. F. Kirkpatrick

PNAS June 1, 1915 1 (6) 354-356; https://doi.org/10.1073/pnas.1.6.354
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A Method of Obtaining Complete Germination of Seeds in Oenothera and of Recording the Residue of Sterile Seed-Like Structures
Bradley Moore Davis

PNAS June 1, 1915 1 (6) 360-363; https://doi.org/10.1073/pnas.1.6.360

Physiology

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Retention in the Circulation of Dextrose in Normal and Depancreatized Animals, and the Effect of an Intravenous Injection of an Emulsion of Pancreas Upon This Retention
I. S. Kleiner and S. J. Meltzer

PNAS June 1, 1915 1 (6) 338-341; https://doi.org/10.1073/pnas.1.6.338

Anthropology

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Exogamy and the Classificatory System of Relationship
Robert H. Lowie

PNAS June 1, 1915 1 (6) 346-349; https://doi.org/10.1073/pnas.1.6.346

Mathematics

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Solution of an Infinite System of Differential Equations of the Analytic Type
F. R. Moulton

PNAS June 1, 1915 1 (6) 350-354; https://doi.org/10.1073/pnas.1.6.350
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On the Factorization of Various Types of Expressions
Henry Blumberg

PNAS June 1, 1915 1 (6) 374-381; https://doi.org/10.1073/pnas.1.6.374

Biochemistry

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Vividiffusion Experiments on the Ammonia of the Circulating Blood
Alice Rohde

PNAS June 1, 1915 1 (6) 357; https://doi.org/10.1073/pnas.1.6.357

Geology

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The Basil Silurian Formations of Eastern North America
Charles Schuchert

PNAS June 1, 1915 1 (6) 359-360; https://doi.org/10.1073/pnas.1.6.359

Chemistry

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The Osmotic Pressure of the Ions and of the Undissociated Molecules of Salts in Aqueous Solution
Stuart J. Bates

PNAS June 1, 1915 1 (6) 363-368; https://doi.org/10.1073/pnas.1.6.363

Physics

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The Extension of the Spectrum Beyond the Schumann Region
Theodore Lyman

PNAS June 1, 1915 1 (6) 368-371; https://doi.org/10.1073/pnas.1.6.368

Articles

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Notices of Biographical Memoirs
PNAS June 1, 1915 1 (6) 390; https://doi.org/10.1073/pnas.1.6.390