LETTER OF TRANSMITTAL. 



Public Health and Marine-Hospital Service, 



Washington, January 8, 1906. 

 Surgeon-General 



Public Health and Marine-Hospital Service, 



Washington, D. O. 



Sir: We have the honor, in compliance with your instructions, to 

 submit herewith a report of part of the work done by us in New 

 Orleans during the latter part of the epidemic, of 1905 in the study of 

 some problems connected with yellow fever. 



This report covers two points, namely, an attempt to grow the yel- 

 low fever parasite and some experiments on its hereditary transmis- 

 sion in the mosquito. 



In a future report we hope to cover the results of our study of the 

 mosquito material collected by us. This material consists of mosqui- 

 toes (Stegomyia fasciata) some of which were permitted to feed on 

 yellow fever cases in the first three days of the disease and others 

 (controls) which stung a series of healthy subjects or such as were 

 suffering from some affection clearly not yellow fever. 



We desire here to express our appreciation of the invaluable assist- 

 ance rendered us by Surgeon J. H, White. 



To Surgeon A. C. Smith we are indebted for the loan of apparatus 

 and for placing at our disposal the hospital laboratory. Passed 

 Assistant Surgeon T. F. Richardson rendered us valuable help iu many 

 ways. To Passed Assistant Surgeons 'Rupert Blue and Thomas D. 

 Berry and Assistant Surgeon Wm. C. Rucker our thanks are due for 

 collections of mosquito larvae. To Dr. H. P. Jones, Dr. Birney Guthrie, 

 and Prof. P. E. Archinard, of New Orleans, our thanks are due for 

 numerous courtesies at the Emergency Hospital. Finally, we desire 

 to acknowledge our indebtedness to many of the other officers of the 

 Service on duty at New Orleans for material assistance on numerous 

 occasions. 



Respectfully, 



M. J. ROSENAU, 



Passed Assistant Surgeon. 



JOS. GOLDBERGER, 



Passed Assistant Surgeon. 

 (m) 



