183 APPENDIX B 



both the wife and husband had been deposited in an open 

 privy vault located thirty-five feet from the milk-house, 

 which was unscreened and open to flies. The gelatine 

 culture exposed for thirty minutes in the rear of the privy 

 vault and in the milk-house among the milk-cans gave 

 numerous colonies of typhoid bacilli, as well as colon bacilli 

 and the ordinary germ-life. The source of infection in the 

 dairyman's wife's case is unknown, but I am positive that 

 in all the cases that occurred on this milk route the infection 

 was due to bacilli carried from this vault by flies and 

 deposited upon the milk-cans, separator and utensils in the 

 milk-house, thereby contaminating the milk. The dairyman 

 supplied milk to 143 customers. Fifty-five cases of typhoid 

 fever occurred, and six deaths resulted therefrom." (From 

 " The House-fly at the Bar Indictment Guilty or Not 

 Guilty?" The Merchants' Association of New York. April, 

 1909, 48 pp.) 



IV. FLIES IN MILITARY CAMPS. 



Dutton (1909) gives an interesting figure to demonstrate 

 the manner in which flies would be carried from sources of 

 typhoid infection (Division Hospitals and Latrines) in the 

 Camps of the United States Army at Fernandina and Tampa 

 to different parts of these camps. He states that Sergeant 

 Brady, who was stricken with typhoid fever at Fernandina, 

 mentioned to him that the lime used about the latrines and 

 garbage dumps was carried by flies to the food which was 

 being used in the camps. 



XIV. APPENDIX B. 



ADDITIONAL OBSERVATIONS ON THE BREEDING 

 HABITS OF MUSCA DOMESTICA. 



Since the third part of this monograph was written and 

 sent to press (July, 1908) I have collected further data as to 



