This journal provides immediate access to some articles. Volume 11(7); July 1925 Astronomy The Relativity Displacement of the Spectral Lines in the Companion of Sirius PMCID: PMC1086032 Chemistry The Separation of Rare Earths by the Ionic Migration Method PMCID: PMC1086034 The Measurement of the Absolute Charge on the Earth's Surface PMCID: PMC1086036 Genetics Human Blood Groups and Their Bearing on Racial Relationships PMCID: PMC1086038 Geology The Basin Range Problem PMCID: PMC1086033 Mathematics On Quasi-Analytic Functions PMCID: PMC1086047 Sur le Calcul Approché des Integrales Definies PMCID: PMC1086048 Paleontology Fossil Plants from the Tertiary of Patagonia and Their Significance PMCID: PMC1086037 Physics A Note on the Principle of Detailed Balancing PMCID: PMC1086035 Inductance Treated Acoustically by Differential Telephones PMCID: PMC1086039 X-Ray Radiation from Hot Sparks PMCID: PMC1086040 The Four Transverse Effects and Their Relations in Certain Metals PMCID: PMC1086041 The Distribution of Energy in Thermal Radiation and the Law of Entire Equilibrium PMCID: PMC1086042 Ionic Mobilities in Ether as a Function of Pressure PMCID: PMC1086043 The Principle of Microscopic Reversibility PMCID: PMC1086044 The Dynamical Function of the Tympanic Membrane and Its Associated Ossicles PMCID: PMC1086045 A New Crystal for Wave-Length Measurements of Soft X-Rays PMCID: PMC1086046 Physiology Human Metabolism in an Environment of Heated Air PMCID: PMC1086029 Invariable Occurrence of Male Sterility with Dietaries Lacking Fat Soluble Vitamine E PMCID: PMC1086030 A Histological Study of Sterility in the Albino Rat Due to a Dietary Deficiency PMCID: PMC1086031 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||