Abstract
WE welcome the appearance of a second edition of this text-book. After an interval of six years much new knowledge has accumulated while older theories and facts have undergone modification. While only seven additional pages are incorporated in this volume, careful reading will show that the revision has been adequate and conscientious. Thus, the account of Latrodectus (or the ‘black widow’ spider) has been brought well up to date with now illustrations. The role of Phlebotomus in relation to the transmission of kala azar is well discussed, and the conclusion is reached that the insectvector theory of the transmission of this disease is not borne out as being a major factor in the process.
Medical Entomology
A Survey of Insects and Allied Forms which Affect the Health of Man and Animals. By Dr. William A. Riley and Dr. Oskar A. Johannsen. (McGraw-Hill Publications in the Zoological Sciences.) Second edition. Pp. xiii + 483. (New York and London: McGraw-Hill Book Co., Inc., 1938.) 25s.
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Biology. Nature 144, 191 (1939). https://doi.org/10.1038/144191b0
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DOI: https://doi.org/10.1038/144191b0