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.