AUG 21 '45 ORGANIZATION OF HYGIENIC LABORATORY. HUGH S. CUMMING, Surgeon General, United States Public Health Service. ADVISORY BOARD. Col. Eugene R. Whitmore, Medical Corps, United States Army; Rear Admiral E. R. Stitt, United States Navy; Dr. John R. Mohler, Chief of United States Bureau of Animal Industry; and Surg. George W. McCoy, United States Public Health Service, ex officio. Prof. William H. Welch, Johns Hopkins University, Baltimore, Md.; Prof. Simon Flexner, Rockefeller Institute for Medical Research, New York; Prof. Victor C. Vaughan, University of Michigan, Ann Arbor, Mich.; Prof. William T. Sedgwick, Massachusetts Institute of Technology, Boston, Mass.; Prof. M. P. Ravenel, University of Missouri, Columbia, Mo. LABORATORY CORPS. Director.-Surg. George W. McCoy. Junior pharmacist.-Claude C. Cannon, Ph. C. Librarian. Murray G. Motter, A. M., M. D. DIVISION OF PATHOLOGY AND BACTERIOLOGY. In charge of division.-Surg. G. W. McCoy. Assistants. Surgs. A. M. Stimson, B. J. Lloyd, Edward Francis; Passed Asst. Surgs. C. W. Chapin, H. E. Hasseltine, James P. Leake, M. H. Neill, G. C. Lake, C. E. Gibbs. Special Expert A. P. Hitchens, M. D., and Bacteriologist T. W. Kemmerer, M. D. Bacteriologist.-Ella M. A. Enlows, M. S. Sanitary bacteriologists.-Hugh B. Corbitt, B. S.; Ida A. Bengtson, Ph. D.; Alice C. Evans, B. S. Technical assistant.-Walter D. Cannon, A. M., LL. B., M. D. Bacteriological technician.—William Lindgren. DIVISION OF ZOOLOGY. Chief of division.-Ch. Wardell Stiles, Ph. D. Assistant.-Surg. Joseph Goldberger. Laboratory aids.—Mary L. Brown, B. E.; Margaret Wood, B. S.; Gordon Thomson, A. B.; and Elizabeth Rountree, B. S. (3) DIVISION OF PHARMACOLOGY. Chief of division.-Carl Voegtlin, Ph. D. Assistant Chemist.-John W. Thompson, A. B. Pharmacologists.-George B. Roth, M. D.; M. I. Smith, B. S., DIVISION OF CHEMISTRY. Chief of division.-William Mansfield Clark, Ph. D. Technical assistant.-Hyman L. Shoub, B. S. SPECIAL DETAIL. M. D. Special Experts Julius Stieglitz, Ph. D., and Russell L. Cecil, M. D. Assistant Chemist W. A. Perlsweig, B. S. Assistant Bacteriologist Liston A. Steffin, B. S. CONTENTS. Page. 1. Chemical preparation and physical properties of T. N. T. de- 2. Preparation of chemically pure 2, 4, 6, trinitrotoluene.... 8. Chronic T. N. T. poisoning in dogs. Protocols and tables .... 9. Mechanism of the anemia. Perfusion and in vitro experiments |