This journal provides immediate access to some articles. Volume 16(11); November 15, 1930 Chemistry THE HEAT OF FORMATION OF WATER PMCID: PMC526718 CRYSTALLINE ALPHA AND BETA METHYL-d-GULOSIDES PMCID: PMC526719 THE RING STRUCTURE OF MANNOSE PMCID: PMC526720 Engineering THE STRESS DISTRIBUTION IN WELDS PMCID: PMC526714 THE STRESS DISTRIBUTION IN WELDED OVERLAPPED JOINTS PMCID: PMC526715 A RADIO SYSTEM FOR BLIND LANDING OF AIRCRAFT IN FOG PMCID: PMC526716 A SENSITIVE INDUCTION BALANCE FOR THE PURPOSE OF DETECTING UNEXPLODED BOMBS PMCID: PMC526717 Genetics NON-DISJUNCTION OF THE X-CHROMOSOME IN DROSOPHILA VIRILIS PMCID: PMC526721 RELATION BETWEEN THE X-RAY DOSAGE AND THE FREQUENCY OF PRIMARY NON-DISJUNCTIONS OF X-CHROMOSOMES IN DROSOPHILA VIRILIS PMCID: PMC526722 RECOVERY FOLLOWING GENETIC DEFICIENCY IN MAIZE PMCID: PMC526723 Mathematics PROJECTIVE NORMAL COÖRDINATES PMCID: PMC526726 ON THE NORM-RESIDUE SYMBOL IN THE THEORY OF CYCLOTOMIC FIELDS PMCID: PMC526727 ON THE SECOND FACTOR OF THE CLASS NUMBER OF A CYCLOTOMIC FIELD PMCID: PMC526728 PERIODIC RECURRING SERIES PMCID: PMC526729 NOTE ON SINGULARITIES OF POWER SERIES PMCID: PMC526730 A METHOD OF OBTAINING NORMAL REPRESENTATIONS FOR A PROJECTIVE CONNECTION PMCID: PMC526731 ON THE UNIFIED FIELD THEORY. I PMCID: PMC526732 THE CRITICAL POINTS OF A FUNCTION OF n VARIABLES PMCID: PMC526733 Physics MAGNETIC ANALYSIS OF NEGATIVE IONS IN MERCURY VAPOR PMCID: PMC526724 THE PRESSURE OF THE WIND ON LARGE CHIMNEYS PMCID: PMC526725 Journal Matter Administrative content — journal masthead, notices, indexes, etc. | ||