This journal provides immediate access to some articles. Volume 8(4); April 1922 Astronomy Note on the Problem of Great Stellar Distances PMCID: PMC1084996 Chemistry The Oxidation of Hydroquinol in the Presence of Aliphatic Amines PMCID: PMC1084991 Mathematics A Solution of the Linear Matrix Equation by Double Multiplication PMCID: PMC1084999 Physics The Grating Space of Mica and the Intensities of the Spectral Orders PMCID: PMC1084992 Ionization and Radiation Potentials and the Size of the Atom PMCID: PMC1084993 Periods and Logarithmic Decrement of the Gravitation Needle under High Exhaustion PMCID: PMC1084994 Plane Reflection of Sound, as Exhibited by the Pinhole Resonator PMCID: PMC1084995 Statistics The Vital Index of the Population of England and Wales, 1838-1920 PMCID: PMC1084997 Seasonal Fluctuations of the Vital Index of a Population PMCID: PMC1084998 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||