VI 



meftt of the services rendered by their colleagues. Especial mention 

 should be made of the fact that the mosquitoes which fed on yellow- 

 fever cases and subsequently were used to produce the initial case of 

 experimental yellow fever (Marcos Cruz) were handled by Professor 

 Beyer. 



Credit is also due to Professor Beyer for the scheme of experi- 

 mentation which was partly carried out. This plan was published by 

 him in full in the New Orleans Medical and Surgical Journal for 

 May, 1904, entitled "The mouth parts and salivary glands, normal 

 and otherwise, of the yellow-fever mosquito." Professor Beyer was 

 a member of Working Party No. 2 from May 5, 1903, to January 

 18, 1904, and was in charge of the laboratory at Vera Cruz from June 

 8 to September 17, 1903, during the absence of Doctor Parker. 



Asst. Surg. Joseph Goldberger was associated with us throughout 

 the entire summer, having been detailed to Vera Cruz to supervise the 

 sanitation of vessels leaving for the United States. He helped us find 

 suitable cases of yellow fever and malaria in the hospitals from which 

 he infected a large collection of mosquitoes, and he also made many 

 of the observations which we have embodied under " Miscellaneous 

 observations on mosquitoes." 



The plans of the commission were laid before Governor Dehesa, of 

 the State of Vera Cruz, who was always most zealous in furthering 

 the scientific investigation of yellow fever, and offered us many 

 facilities. 



To Mr. Alexander M. Gaw, of Jalapa, Mexico, we desire to express 

 our particular appreciation of many thoughtful kindnesses and mate- 

 rial assistance. 



To Dr. Eduardo Liceaga, president of the superior board of health 

 of Mexico, and to his representatives in Vera Cruz, Doctors del Rio, 

 Iglesias, and Garcia, we wish to express our thanks for their interest 

 in the work and for many courtesies, thoughtful kindnesses, and mate- 

 rial assistance. 



The United States consul, Mr. W. W. Canada, and Acting Asst. 

 Surg. S. H. Hodgson, U. S. Public Health and Marine-Hospital Serv- 

 ice, were always ready to assist us in every way possible. 

 . Finally, we wish to express our appreciation to the Surgeon-Gen- 

 eral of the Public Health and Marine-Hospital Service for his con- 

 tinued interest and support which made the work possible. 



M. J. Rosenatt, 

 Passed Assistant Surgeon, Chairman. ; 

 Herman B. Parker, 

 Passed Assistant Surgeon. | 

 Edward Francis, 



Assistant Surgeon. 

 Geo. E. Beyer, 

 Acting Assistant Sure/eon. 



