192 PARASITES OF MAN 



traoslation of it, with explanatory notes, in the ' Veterinarian ' 

 for Feb., 1878. Later on, in the 'Lancet' (March 23rd, 1878), 

 Dr Da Silva Lima published an interesting letter correcting a 

 misconception that had incidentally arisen in the mind of a 

 commentator (on the Helminthological work of 1877), and at 

 the same time he pointed to the original facts connected with 

 the discovery of Wucherer's Filaria. As my views are in perfect 

 accord with those of Dr Da Silva Lima, I can only regret that 

 errors of interpretation should have crept into the discussion, 

 Dr Lima honorably recognises the nomenclature (Filaria Ban- 

 crofti) which I proposed for the adult worm, and only claims 

 for Wucherer that which is fairly due. 



On the 4th of January, 1878, I received from Dr Patrick 

 Manson a manuscript in which he announced the discovery of 

 the Iarvs9 of Filaria sanguinis hominis in the stomach of 

 mosquitoes. Already, in April, 1877, Dr Bancroft had in- 

 formed me of his expectation of finding that these insects 

 sucked up the larvae of the Filaria whilst engaged in their 

 attacks on man. Dr Bancroft's supposition was a very natural 

 one, but it remained for Manson to make the actual discovery 

 of the existence of human hsematozoa, or parasites that had 

 been such, within the stomach of Culex mosquito. I lost no 

 time in making the principal facts public (' Lancet,' Jan. 12th, 

 1878). Dr Manson at the same time forwarded for publication 

 a record of thirty-five additional cases of haematozoa occurring 

 in Chinese subjects, together with additional particulars of one 

 of the cases already published in the c Customs Gazette.' 

 These were afterwards published as separate contributions in 

 the ' Medical Times and Gazette.' Dr Manson likewise for- 

 warded materials for a paper entitled " Further Observations 

 on Filaria sanguinis hominis." In this communication he 

 gave an analysis of the cases (sixty-two in all) in which he had 

 observed the haematpzoa, and he added valuable statistical 

 evidence as to the prevalence of Filariae in the Amoy district, 

 dwelling especially on the influence of age, sex, and occupation 

 in determining the presence of the parasite. He also described 

 the morbid states with which these entozoa were commonly 

 associated. 



On the 7th of March, 1878, I formally communicated to the 

 Linnean Society a detailed account of Hanson's investigations 

 relating to the metamorphoses undergone by the Filariae within 

 the body of the mosquito. In this paper Manson pointed out 



