October 23, 1903.] 



SCIENCE. 



531 



The members of the party had all returned 

 from Vera Cruz about October 1, 1902. 



Professor Beyer had solicited, a number of 

 times, my assistance in working up the mate- 

 rial he had prepared, consisting of slides of 

 infected mosquitoes. 



On January 23, 1903 — fifteen weeks after 

 the return of the members from Mexico — I 

 ^ undertook the examination of their material. 

 Up to this time. Professor Beyer, who was the 

 biologist of the party, knew of no evidence of 

 a parasite in these mosquitoes excepting some 

 ' granular bodies,' as they were styled, which 

 were found in the cells of the salivary glands, 

 and which I afterwards showed the party were 

 not ' granular bodies,' but were linear bodies, 

 five or six times longer than wide — the spo- 

 rozoites. 



On January 30 I reported having found in 

 the bodies of a number of the mosquitoes an 

 animal parasite in process of sexual devel- 

 opment. This report was accompanied by my 

 sketch of all the processes. 



According to Professor Beyer's statement to 

 me at the time, Dr. Parker was urged to come 

 to New Orleans in order to see the results 

 of my investigations. The party was then or- 

 dered to convene in New Orleans. Dr. Parker 

 arrived on or about the tenth of February, 

 and a very short time after his arrival he and 

 Professor Beyer called on me. They were 

 both shown my sketch of the parasite in its 

 various stages and given by me a history of 

 these stages. Dr. Parker thanked me for my 

 services and expressed his desire to see the 

 parasite. He examined the sketch very care- 

 fully and did not say that he had ever recog- 

 nized any of the stages depicted in the sketch. 



On or about February 12 the members had 

 their first session and heard my report read. 

 At this session and the two following I was 

 present, and, singly and alone, demonstrated 

 step by step the parasite and its gradual devel- 

 opment from the third to the fifteenth day 

 after infection. 



On showing the spores in the tissues sur- 

 rounding the salivary glands (wandering 

 spores). Dr. Parker remarked that he had a 

 photograph showing this phase. He then 

 opened a package of well-executed photographs 



which he had brought from Washington, and 

 found one showing these spores. There were 

 about fifteen photographs in the package and 

 after all had been examined carefully no trace 

 of any other phase of the parasite could he 

 found. As Dr. Parker knew the object of his 

 coming to New Orleans, it is perfectly nat- 

 ural to conclude that if he had had any other 

 photographs showing the parasite, he would 

 have brought them with him. 



At no time during these sessions did any 

 member of the party signify by word or ac- 

 tion that any of the phases which were being 

 shown them had been seen before. On the 

 contrary, the difficulty which I had in get- 

 ting them to see and comprehend some of 

 the phases was conclusive evidence that they 

 were seeing these things for the first time. 



At the conclusion of the third session I 

 said to the members that I expected to be 

 given full recognition for my services and 

 this recognition must be placed in the text 

 treating on the parasite, and not in the letter 

 of transmittal. 



Dr. Parker, speaking for and before the 

 members, again thanked me for my work and 

 promised that I should be given the recogni- 

 tion asked, and that it would be placed in the 

 text treating the parasite. 



At the fourth and final session — to which I 

 was not invited and did not attend — the his- 

 tory of the parasite was incorporated in the 

 final report of the working party. Dr. Parker 

 and Professor Beyer had written this history 

 so that it was a copy of my report, to which 

 Dr. Pothier objected and advised that it be 

 written in their own way so as not to appear 

 as a duplicate of my report. This advice 

 prevailed and the history was written as it 

 now appears in Bulletin No. 13. 



At this session Dr. Parker and Professor 

 Beyer, notwithstanding their promise to me 

 the day before, declined to recognize my ser- 

 vices. Dr. Pothier was indignant and refused 

 to sign the report unless justice were done 

 me. A recognition was then placed in the 

 text treating of the parasite and the report 

 was signed by the three members. On the 

 return of Dr. Parker to Washington this rec- 

 ognition was suppressed, as will be shown 



