NEWSTEAD, R., DUTTON, J.E., AND TODD, J.L. Insects and Other Arthropoda Collected in the Congo Free State. _Ann. Trop. Med. & Parasit._, Vol. 1, No. 1, Feb. 1, 1907, pp. 3-100. An interesting paper giving notes on many insects that cause or carry disease. NUTTALL, G.H.F. Spirochætosis in Man and Animals. _Jour. of Roy. Inst. of Pub. Health_, 1908. Why Spirochætes should be regarded as Protozoa. Classification; list of blood-inhabiting forms; relapsing fevers; transmission by ticks and other Arthropods. O'CONNELL, M.D. The Oversea Transport of Insect-borne Disease. _Jour. Trop. Med. & Hyg._, XI, 43, Feb. 1, 1908. Refers to article in same journal (Jan. 15) and points out that malaria is very likely to be transmitted by mosquitoes in this way. OSBORN, HERBERT. Insects Affecting Domestic Animals. _U.S. Dept. of Agric., Div. of Ento., Bull. No. 5_, N.S., 1896. Discusses the various insect pests of man and domestic animals Host lists. Bibliography. RICKETS, H.T., AND WILDER, R.M. The Typhus Fever of Mexico. _Jour. Amer. Med. Assn._, LIV, No. 6, Feb. 5, 1910, p. 463. Believes this disease is transmitted by insects, probably lice. RITCHIE, JAMES. A Review of Current Theories Regarding Immunity. _Jour. Hyg._, 2, 1902, pp. 215-285, and pp. 452-464. Discussion of various theories. Bibliography. SHIPLEY, A.E. On the Relation of Certain Cestode and Nematoda Parasites to Bacterial Disease. _Jour. of Eco. Biol._, 4, 1909, pp. 61-71. Shows that these parasites may often cause serious diseases by opening the way for malignant germs. WARD, H.B. Spirochetes and Their Relationship to Other Organisms. _Amer. Nat._, 42, 1908, No. 498, pp. 374-387. Still undecided as to whether they belong with bacteria or Protozoa, probably the latter. WARD, H.B. The Relation of Animals to Disease. _Science_, N.S., 22, 1905, pp. 193-203. An interesting, comprehensive review of the subject. WARD, HENRY B. Relation of Animals to Disease. _Transactions of Amer. Micro. Soc._, Vol. 27, 1907, pp. 5-20. The various ways in which animals may produce or carry disease. The Oversea Transport of Insect-borne Diseases. Editorial in _Jour. Trop. Med. & Hyg._, XI, Jan. 15, 1908, pp. 22-23. Points out the danger of yellow fever, plague and other diseases being borne overseas by infected insects. The Society for the Destruction of Vermin. Editorial in _Jour. Trop. Med. & Hyg._, XI, Apr. 15, 1908, p. 124. Tells of organization of such society and its purposes. INDEX Adams, S.H., 132. Advisory Committee, 146. Agramonte, Dr. Aristides, 123. Alimentary canal, fly larvæ in, 49. Amoeba, 19. Anopheles, adults, 91; eggs, 92; habits of adults, 94; larvæ, 78, 79, 93; pupæ, 93; resting position, 92; species in U.S., 92.