784 EXPEEIMENT STATIOlSr EECORD. 



summer than in winter. The worms found in the blood vessels are always young 

 forms of S. Udcntatum. The most abundant intestinal nodules and the ma- 

 jority of sexually mature parasites are found in the cecum. S. edentatum is 

 more frequently found in the intestine than S. Mdentatum, and the latter is far 

 commoner than S. quadridcntatum. I have not found young forms of 8. Uden- 

 tatuin in the intestine and its membranes. On this account and for several 

 other reasons I conclude that the parasite develops up to a certain stage in the 

 mesenteric artery, and only reaches the intestinal wall by way of the blood 

 stream about the period of sexual maturity." 



A bibliography of 76 titles is appended. 



Eye worm of chickens, E. V. Wilcox and C. K. McClelland (Hawaii Sta. 

 Press Bui. 43, pp. 14). — This parasite, known as Manson's eye worm (Oxy- 

 spirura mansoni), is said to be very commonly met with in Honolulu. An 

 examination of chickens in all parts of the town indicates that the worm is 

 found in nearly every flock. In cases of slight infestation there may be only 2 

 or 3 worms in each eye, while in badly infested flocks the number of worms 

 may reach 50, 60, or more in each eye of infested fowls. 



It appears from the investigations here reported " that the eggs of the eye 

 worm of chickens are either laid in the eye from which they are immediately 

 washed into the throat by the flow of tears down the tear duct, or are set free 

 in the intestines by the disintegration of mature female worms which had 

 passed down the tear duct, through the throat, into the intestines. The eggs 

 hatch for the most part or altogether in damp soil, where they live until they 

 attain at least one-third of their mature size, and then gain entrance to the 

 eyes of chickens directly from the soil. 



" The best treatment for the destruction of the eye worms in the eyes of fowls 

 consists in anesthetizing the eye with a 5 per cent solution of cocaine and then 

 lifting the nictitating membrane and dropping a 5 per cent solution of creolin 

 directly into the inner corner of the eye, under the nictitating membrane. The 

 fact that soil contaminated with the feces of infested fowls contains thousands 

 of the larvae of the eye worm makes it obvious that means should be taken to 

 destroy the young worms in such situations. This may be accomplished by 

 applying quicklime and keeping the soil as dry as possible, and also by the 

 frequent cleaning and removal of all feces from infested yards, or, in the case 

 of bad infestations, by keeping the birds on dry floors which can be frequently 

 cleaned until the infestation has disappeared." 



Tapeworms of waterfowl, Wundsch (Mitt. Fischerei Ver. Prov. Branden- 

 burg, n. ser., 2 {1913), No. 12, pp. 178-1S3; abs. in Internat. Inst. Agr. [Rome'\, 

 Mo. Bill. Agr. Intel, and Plant Diseases, 4 {1913), No. 4, p. 620). — Investiga- 

 tions have shown that the strap tapeworm {Ligula simpUcissima) , which in 

 the immature stage infests roach and bream, occurs in large numbers in the 

 waterfowl that frequent Miiggel lake near Berlin. 



RITUAL ENGINEERING. 



Repoift of the ministry of public works [concerning irrigation] {Rpt. Min. 

 Pub. Wo'rks Egypt, 1911, pp. 43-281, pis. 23). — These pages contain reports of 

 the inspectors- general of irrigation for Upper Egypt, Lower Egypt, and the 

 Sudan, of the inspector-general on basin conversion works, and of the resident 

 engineer on th^e heightening of the Aswan Dam and on Aswan Dam maintenance. 

 The reports cnuitain a large amount of irrigation, drainage, stream measure- 

 ments, crop, auh duty of water data with numerous profiles and illustrations. 



Pumping jjlant irrigation, H. B. Walkee {Dry Farming, 7 {1913), No. 7, 

 pp. 242-244)- — In a review of the reports of irrigation by pumping in western 



