MEDICAL ENTOMOLOGY HOWABD. 585 



the house fly and other flies, and the excellent volume by LePrince 

 and Orenstein on ;c Mosquito Control in Panama." As early as 1910, 

 Prof. K. W. Doane, of Leland Stanford University, published a book 

 entitled " Insects and Disease." This was followed by the excellent 

 volume entitled '' Handbook of Medical Entomology," published by 

 Professors Riley and Johannsen, of Cornell University, in 1915 ; and 

 by the excellent compendium entitled " Medical and Veterinary Ento- 

 mology," by Dr. W. B. Herms, of the University of California, in the 

 same year. Later Dr. A. C. Chandler, of the Oregon Agricultural 

 College, published his admirable volume, " Animal Parasites and 

 Human Disease," in 1918 ; an excellent volume entitled " Entomology 

 for Medical Officers," by Lieut. Col. A. Alcock, Liverpool, 1920, and 

 in the present year has appeared the very up-to-date volume entitled 

 "Sanitary Entomology", edited by Dr. W. D. Pierce, formerly of 

 the Bureau of Entomology at Washington. All of these works con- 

 tain full bibliographies, and it will perhaps not be necessary to add 

 a bibliographical list to this sketch. 



A number of periodicals have also been started which are largely, 

 and in some cases entirely, devoted to medical entomology. 



The enormous and promising field is rapidly being exploited, and 

 the more it is being worked the more obvious it becomes that an 

 enormous fight is on between the human species and the class of 

 insects which not only destroy his crops and damage most of his 

 valued possessions but threaten his bodily health in a host of differ- 

 ent ways. 



The effect of these discoveries on the public health is already very 

 apparent. Thousands upon thousands of lives have already been 

 saved as their result. The intensity of many great scourges has been 

 relieved. One of them, yellow fever, has measurably become a thing 

 of the past. Gorgas's magnificent demonstration at Panama has 

 shown that, so far as disease is concerned, the Tropics may be in- 

 habited by the white race, and what that means for the future of the 

 world no one can now estimate. All over the United States even, a 

 country which is fortunately for the most part situated in the health- 

 iest of climates, life on the average is longer and happier because of 

 the knowledge that has been gained regarding insect-borne diseases. 

 The American Public Health Association has borne its important 

 part as an exploiter of these discoveries, as a publicist, as an in- 

 fluential apostle in the preaching of the new crusade. 



In glancing through the fifty or more volumes of the publications 

 of this society one is very greatly impressed by their high character. 

 The whole series serves as an accurate record of the advance of pre- 

 ventive medicine in the United States, in Canada on the north, and in 

 Mexico and the West Indies on the south. It is interesting to note, 

 for example, the multitude of articles and reports on yellow fever 



