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This journal provides immediate access to some articles. Volume 1(4); April 1915 Anthropology The Study of Indian Music PMCID: PMC1090785 Some Recent Anthropological Explorations PMCID: PMC1090786 The Diffusion of Horse Culture Among the North American Indians PMCID: PMC1090791 Astronomy Photographic Determination of Stellar Parallaxes with the 60-inch Reflector PMCID: PMC1090773 Bacteriology On a New Group of Bactericidal Substances Obtained from Hexamethylenetetramine PMCID: PMC1090783 Chemistry On Chondrosamine PMCID: PMC1090774 The Freezing-Point-Solubility Law for Ideal Solutions PMCID: PMC1090775 Mercury Derivatives of Aromatic Amines: I. Structure of Primary and Secondary p-Amino-Phenylmercuric Compounds PMCID: PMC1090776 Molecular Rearrangements of Triphenylmethane Derivatives: I. General Discussion PMCID: PMC1090777 Molecular Rearrangements of Triphenylmethane Derivatives: II. Experimental Part PMCID: PMC1090778 Genetics Growth and Variation in Maize PMCID: PMC1090782 Mathematics The Second Derivatives of the Extremal Integral for a General Class of Problems of the Calculus of Variations PMCID: PMC1090787 Groups Possessing at Least One Set of Independent Generators Composed of as Many Operators as There are Prime Factors in the Order of the Group PMCID: PMC1090788 Point Sets and Allied Cremona Groups PMCID: PMC1090789 The Straight Lines on Modular Cubic Surfaces PMCID: PMC1090790 Paleontology Discovery of Algonkian Bacteria PMCID: PMC1090792 Physiology Chemical and Physiological Studies of a Man Fasting Thirtyone Days PMCID: PMC1090784 Zoology Ecology of the Murray Island Coral Reef PMCID: PMC1090779 Changes in Shade, Color and Pattern in Fishes and their Bearing on Certain Problems of Behavior and Adaptation PMCID: PMC1090780 Some Experiments on Spermatogenesis in Vitro PMCID: PMC1090781 Correction On the Earth Considered as a Heat Engine PMCID: PMC1090793 Corrects: On the Earth Considered as a Heat Engine. Proc Natl Acad Sci U S A. 1915 February; 1(2): 81–86. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||
