1118 EXPERIMENT STATION RECORD. 



this action. In the process of disintegration of trypanosomes in the blood under the 

 influence of brilliant green a number of peculiar developmental forms were observed. 



Piroplasmoses, L. Paxisset (Rev. Gen. Med. Vet, 7 {1906), No. 75, pp. 113-127, 

 fig. 1) . — The distribution of these diseases throughout the world is briefly outlined, 

 and descriptive notes are given on piroplasmoses in sheep, horses, and dogs, with an 

 account of the symptoms and lesions in each case, etiology of the various forms of 

 the disease, the agency of ticks in transmitting the disease, and immunization by 

 means of vaccine and serum. 



Piroplasmosis complicated with horse sickness, Theiler (Rev. Gen. MM. 

 Vet., 7 (1906), No. 76, pp. 178-181). — Brief notes are given on the occurrence of piro- 

 plasmosis among horses after inoculation with the virus of horse sickness. The 

 development of piroplasmosis was due to the use of infected blood. 



The treatment of nail pricks of the horse's foot, E. L. Moore (South Dakota 

 Sta. Bui. 95, pp. 17-22). — Attention is called to the fact that even slight injuries to 

 the foot may develop serious complications on account of the fact that the foot is 

 constantly in contact with the dirt which may carry bacteria. 



In treating cases of nail pricks, followed by the formation of pus, the author 

 obtained excellent results by cleansing the hoof with soap and water, paring away 

 the horn of the hoof from around the affected part, then washing the part in a solu- 

 tion of corrosive sublimate, after which a piece of absorbent cotton is placed on the 

 hoof and the whole firmly bandaged and covered with a thick coating of tar. A 

 little cotton is allowed to extend above the tar bandage, and the corrosive sublimate 

 solution may be applied daily without removing the bandage. This bandage should 

 be left in place for from 7 to 10 days without being disturbed. Detailed clinical 

 notes are given on a number of cases. 



Poisoning of horses by Ornithogalum thyrsoides, D. Hutcheon (Agr. Jour. 

 Cape Good Hope, 28 (1906), Xo. 2, pp. 165-172, pi. 1). — A report was previously 

 made on the death of horses from eating this plant and experiments were made in 

 feeding dried plants which proved to be exceedingly poisonous. Further experi- 

 ments were carried out in feeding the fresh green plant, and these experiments 

 furnished the basis for the present article. It was found that two pounds of the fresh 

 plant were sufficient to cause death in ponies within 2 days. The symptoms of poi- 

 soning are briefly discussed and notes are given on the distribution of the plant. 



Examination of the Western Australian poison plants, E. A. Mann (Jour. 

 Dept. Agr. West. Aust., 12 (1905), No. 6, pp. 550-561, pis. 5). — Chemical analyses were 

 made of various poisonous plants, including Gaslrolobium calycinum and other species 

 of this genus, as well as species of Oxylobium, particular attention being given to the 

 first-named species. An alkaloid known as cygnin was isolated and was used in phy- 

 siological tests with guinea pigs. It was found that this alkaloid was fatal for ordi- 

 nary guinea pigs in hypodermic doses of T \ to ^\ of a grain. 



The rabies corpuscles of Negri, J. Schiffmaxn (Ztsehr. Hyg. u. InfectionskranJ:., 

 52 (1906), No. 2, pp. 199-228). — As the result of an extensive study of these bodies the 

 author found that at times they may not be present in the medulla or spinal cord. 

 They are subject to considerable variation with regard to their structure, distribu- 

 tion, and occurrence in the hippocampus and cerebellum, but this variation is inde- 

 pendent of the incubation period and number of inoculations which have been made 

 with the virus. After repeated passages of the virus Negri's corpuscles may be 

 entirely absent in the hippocampus and cerebellum. 



The tapeworms of American chickens and turkeys, B. H. Ransom ( U. S. 

 Dept. Agr., Bur. Anim. Indus. Circ. 85, pp. 268-285, figs. 31).— This is reprinted from 

 the annual report of the Bureau for 1904 (E. S. R., 17, p. 704). 



