This journal provides immediate access to some articles. Volume 2(10); October 1916 Astronomy Preliminary Results on the Color of Nebulae PMCID: PMC1091097 Spectrographic Observations of Relative Motions in the Planetary Nebulae PMCID: PMC1091100 Botany The Excretion of Acids by Roots PMCID: PMC1091099 New Determinations of Permeability PMCID: PMC1091101 Chemistry The Action of Alkali in the Production of Lipolytically Active Protein PMCID: PMC1091098 Steric Hindrance and the Existence of Odd Molecules (Free Radicals) PMCID: PMC1091106 The Cobaltammines PMCID: PMC1091108 Genetics Sex Intergrades in a Species of Crustacea PMCID: PMC1091104 Mathematics Point Sets and Cremona Groups: Part III PMCID: PMC1091102 Some Problems of Diophantine Approximation: A Remarkable Trigonometrical Series PMCID: PMC1091105 Newton's Method in General Analysis PMCID: PMC1091107 National Research Council Report of the First Meeting PMCID: PMC1091109 Reports of Meetings of the Executive Committee PMCID: PMC1091110 Organization of the Research Council PMCID: PMC1091111 Physics The Interferences of Spectra Both Reversed and Inverted PMCID: PMC1091103 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||