204 



Washington, 



February 18, 1905. 



Dear Sir, — Replying to your letter of January 27, forwarding 

 specimens of animal parasites, would say that we are unable to pass 

 any opinion on specimen No. 1. No. 2 are dipterous larva? no doubt 

 deposited by some fly after the death of the fowl. No. 3 contains 2 

 species of nematode worms. 



TricJiosoma sp. and Heterahis papillosa, and a tape worm, 

 Davamea echin obo tlirida. No. 4 are specimens of Heterakis 

 perspicillum. No. 5 contains specimens of Strongijlus Micrurus 

 which occurs in the lungs of cattle and specimens of Trichuris affinis 

 which occurs in the caecum. 



The life history of none of these parasites is well-known. In 

 the case of Heterahis papillosa and perspicillum, however, there 

 seems to be direct development, that is, the eggs deposited by the 

 worms pass out of the fowl's intestines and when the embryonic 

 worms e-ither before or after hatching: are swallowed with the food or 

 water by other fowls, the worms mature in the latter. In the case of 

 the tape worm there is undoubtedly an intermediate host such as an 

 insect, snail, or other small invertebrate. 



A number of publications on the question of parasites are being 

 forwarded under separate cover. 



I am, etc., 



(Sgd.) D. E. SALMON. 

 Sir Daniel Morris, K.C.M.G. 



POULTRY. 



REMARKS SENT WITH SPECIMENS. 



1. Specimen, scaled off the liver of a fowl which had died from 

 unknown cause, no visible symptoms appearing. 



2. Specimens. These were found located on liver and gizzard, 

 in nest form, closely packed together, very active when disturbed. 

 Placed in pure alcohol did not affect them, 50 per cent, of creosote 

 added, they lived 20 minutes, showing how difficult it would be to 

 reach them by treatment. 



3. Specimen. Taken from same fowl found in intestines. The 

 bird was under observation and voided these worms naturally, was 

 treated with turpentine, creosote and oil, died. Examination showed 

 large numbers located in intestines. 



4. Specimen. Found in intestines, not very numerous, fowl 

 very anaemic, due it is thought to the attack of these worms. 



The victims were imported White Wyandottes, supplied from 

 the Government Farm, Nova Scotia, bought when quite young 

 chickens. The question arises whether they came to us infected or 

 whether the parasite attacked them here. 



So far as I can say our ordinary Creole poultry have never 

 exhibited similar symptoms. I have had thousands of poultry killed, 



