Produced by Bryan Ness, Iris Schimandle, Brownfox and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) Transcriber's Note: Barring some obvious typos, the text has been left as printed. Discrepancies identified are listed at the end of the text. [Illustration: Some early medical entomology. Athanasius Kircher's illustration of the Italian tarantula and the music prescribed as an antidote for the poison of its bite. (1643).] HANDBOOK OF MEDICAL ENTOMOLOGY WM. A. RILEY, PH.D. Professor of Insect Morphology and Parasitology, Cornell University and O. A. JOHANNSEN, PH.D. Professor of Biology, Cornell University [Illustration] ITHACA, NEW YORK THE COMSTOCK PUBLISHING COMPANY 1915 COPYRIGHT, 1915 BY THE COMSTOCK PUBLISHING COMPANY, ITHACA, N. Y. Press of W. F. Humphrey Geneva, N. Y. PREFACE The Handbook of Medical Entomology is the outgrowth of a course of lectures along the lines of insect transmission and dissemination of diseases of man given by the senior author in the Department of Entomology of Cornell University during the past six years. More specifically it is an illustrated revision and elaboration of his "Notes on the Relation of Insects to Disease" published January, 1912. Its object is to afford a general survey of the field, and primarily to put the student of medicine and entomology in touch with the discoveries and theories which underlie some of the most important modern work in preventive medicine. At the same time the older phases of the subject--the consideration of poisonous and parasitic forms--have not been ignored. Considering the rapid shifts in viewpoint, and the development of the subject within recent years, the authors do not indulge in any hopes that the present text will exactly meet the needs of every one specializing in the field,--still less do they regard it as complete or final. The fact that the enormous literature of isolated articles is to be found principally in foreign periodicals and is therefore difficult of access to many American workers, has led the authors to hope that a summary of the important advances, in the form of a reference book may not prove unwelcome to physicians, sanitarians and working entomologists, and to teachers as a text supplementing lecture work in the subject. Lengthy as is the bibliography, it covers but a very small fraction of the important contributions to the subject. It will serve only to put those interested in touch with original sources and to open up the field. Of the more general works, special acknowledgment should be made to those of Banks, Brumpt, Castellani and Chalmers, Comstock, Hewitt, Howard, Manson, Mense, Neveau-Lemaire, Nuttall, and Stiles.