CONTENTS.--No. 1. Photomicrographs of spirochetae, entamebae, plasmodia, trypanosomes, leishmania, negri bodies, and parasitic helminths. Jan. 1913.--No. 2. Papers by officers of the Medical Corps, U.S. Army read before the Fifteenth International Congress on Hygiene and Demography, Washington, D.C. September, 1912. Jan. 1913.--No. 3. Craig, C.F. & Nichols, H.J. Studies of syphilis. With introduction by Major Frederick F. Russell. June, 1913.--No. 4. Ludlow, C.S. Disease-bearing mosquitoes of North and Central America, the West Indies, and the Philippine Islands. Nov. 1913.--No. 5. King, E. Mental disease and defect in United States troops. 1914.--No. 6. Craig, C.F. The prophylaxis of malaria with special reference to the military service. 1914.--No. 7. Christie, A.C. Studies in Roentgen-ray diagnosis, with especial reference to the gastro-intestinal tract. 1915.