February, ' 13] BRUEg: STABLE FLY and infantile PARALYSIS 101 



experiments with them to determine whether Simuliura transmits 

 pellagra would be futile. 



Mr. S. J. Hunter: I may say that the results of the experiments 

 in the laboratory failed to prove that the monkey was susceptible. 



President W. D. Hunter: Is there any further discussion? If 

 not, the next paper is by Mr. C. T. Brues on "The Transmission of 

 Infantile Paralysis by Stomoxys calcitrans." 



THE RELATION OF THE STABLE FLY (STOMOXYS CALCIT- 



RANS) TO THE TRANSMISSION OF 



INFANTILE PARALYSIS' 



A Resume of Observations by Brues and Sheppard and of Experi- 

 ments by Rosenau and Brues 



By Charles T. Brues 



Infantile paralysis, more accurately designated anterior polio- 

 myelitis or acute epidemic poliomyelitis, is a disease which has aroused 

 much interest in the United States for a number of years on account 

 of its serious nature and much increased prevalence. Complete 

 ignorance as to the way in which it spreads and develops in epidemic 

 form has also served to augment the dread of this disease. It affords 

 me great satisfaction, therefore, to be able to present today a resume 

 of some observations and experiments bearing on the probable method 

 of transmission of infantile paralysis. 



These entomological investigations were conducted under the auspices 

 of the Massachusetts State Board of Health and have extended over 

 a period of two years. The State Board had previously conducted 

 extensive investigations along various lines under the guidance of 

 an advisory committee consisting of Drs. R. W. Lovett, M. W. 

 Richardson, M. J. Rosenau, Theobald Smith, J. H. Wright and J. 

 L. Morse, and Doctor Richardson later gave much of his time to 

 further the success of the entomological work. During the summer 

 of 1911 an extended series of entomological field observations was 

 made by the writer in association with Dr. P. A. E. Sheppard 

 who was studying the epidemiology of the disease for the State 

 Board of Health. The more important facts then ascertained have 

 already been published in the Journal of Economic Entomology 2 



■ Contributions from the Entomological Laboratory of the Bussey Institution, 

 Harvard University, No. 62. 



2 Brues, C. T. and Sheppard, P. A. E. The Possible Etiological Relation of Cer- 

 tain Biting Insects to the Spread of Infantile Paralysis. Journ. Econ. Entom. 

 Vol. 5, No. 4, pp. 305-324 (1912), previously briefly abstracted in the Monthly 

 Bulletin of the Mass. State Board of Health for December 1911, pp. 337-340. 



