Van Beneden, P.J. Animal Parasites and Messmates. 1889. Contains much that is interesting.

Ward, Henry B. Influence of Parasitism on the Host. Proc. Amer. Assn. for Advancement of Science, Vol. 56, 1907. A comprehensive statement of this subject. List of literature.

PROTOZOA

Calkins, G.N. The Protozoa. Osler's Mod. Med., Vol. I, 1907, p. 353. General notes on the Protozoa; classification; reproduction; life-cycle of various forms. Regards Protozoa as subkingdom and the four great divisions as phyla.

Calkins, G.N. Protozoölogy. N.Y., 1909. Chapters on parasitism, pathogenic Protozoa, etc.

Clarke, J.J. Protozoa and Disease. London, 1903, Pt. I. Discusses the various protozoa that cause disease, and refers frequently to those that are transferred from host to host by insects.

Clarke, J.J. Protozoa and Disease. London, 1908. Part II, comprising sections on the causation of smallpox, syphilis and cancer. Notes on parasitic Protozoa, tropical diseases, ticks, piroplasmosis, etc.

Daniels, C.W. Persistence of the Tropical Diseases of Man Due to Protozoa. Jour. Trop. Med. & Hyg., 12, Aug. 2, 1909, pp. 232–234. Same in Lancet, II, 1909, p. 460. Good summary of present knowledge of the subject.

Minchin, E.A. Protozoa. In Albutt and Rolleston's System of Medicine, II, 1907, pp. 9–122. A comprehensive chapter on Protozoa. Many parasitic forms are figured and described. Bibliography.