This journal provides immediate access to some articles. Volume 8(8); August 1922 Mathematics Spaces with Corresponding Paths PMCID: PMC1085105 Number of Substitutions Omitting at Least one Letter in a Transitive Group PMCID: PMC1085106 Paleontology Hesperopithecus, the First Anthropoid Primate Found in America PMCID: PMC1085108 Recent Discoveries on the Antiquity of Man PMCID: PMC1085109 Physics Electronic Bombardment of Nickel PMCID: PMC1085111 The Crystal Structure of Potassium PMCID: PMC1085112 Preliminary Report on the Ionization of Potassium Vapor by Light PMCID: PMC1085113 The Absorption of Light by Sodium and Potassium Vapors PMCID: PMC1085114 Statistics On the Measurement of a Physical Quantity Whose Magnitude is Influenced by Primary Causes beyond the Control of the Observer and on the Method of Determining the Relation between Two Such Quantities PMCID: PMC1085110 Zoölogy Photic Orientation in Insects PMCID: PMC1085107 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||