PATHOLOGIC CHANGES OF BONE IN CHRONIC FLUORINE POISONING (With five plates．) John T．Bauer，M.D,Paul A．Bishop，M．D．，And William A．Wolff，Ph．D 67
HYPERPARATHYROIDISM RELIEVED BY REMOVAL OF A PARATHYROID TUMOR (With five plates．) John B．Flick and John H．Gibbon，Jr 73
SPONTANEOUS RUPTURE OF THE ESOPHAGUS．REVIEW OF LITERATURE AND REPORT OF ONE CASE (With one plate．) E．Chester Ridgway，Jr．，and Garfield G．Duncan 79
OBSERVATIONS ON THE TAKATA-ARA TEST IN HEPATIC DISEASES Tracy D．Cuttle，Elizabeth G．Kerr and William A．Wolff 99
HYPOGLYCEMIA；HYPERTROPHY AND HYPERPLASIA OF THE ISLANDS OF LANGERHANS IN THE NEWBORN INFANT FOLLOWING MATERNAL DIABETES．REPORT OF CASE ASSOCIATED WITH TETANY，AND REVIEW OF LITERATURE John T．Bauer and Hubert A．Royster，Jr 109
PROTAMINE ZINC INSULIN AND ITS PRACTICAL APPLICATION IN THE TREATMENT OF DIABETES MELLITUS Garfield G．Duncan 121