VETERINARY SCIENCE AND PRACTICE. 103 



effects. After this process had heen continued for several months the serum of 

 treated animals was found to have considerable protective power. 



Experiments on 5 horses demonstrated that serum from treated animals is capable 

 of protecting susceptible animals from lethal doses of virulent blood. The serum 

 has no striking curative properties. It is not hemolytic, and causes no hemoglobi- 

 nuria. By means of combinations of virus and serum it was found possible to pro- 

 duce a mild form of horse sickness, which in turn conferred a lasting immunity from 

 the disease. The author believes that a practical method of immunization has been 

 found. 



A preliminary report on trypanosomiasis of horses in the Philippine 

 Islands, W. E. Mcsorave and X. E. Williamson (Philippine Dept. Int., Bureau 

 Govt. Lab. [Pub.], 1903, No. 3, {>/>. $6, }>lx. ,.'). — The authors discuss the history of the 

 epidemic in the Philippines, the mode of transmission, symptoms, diagnosis, and 

 preventive measures. The position is taken that infection occurs through skin 

 wounds produced by biting flies, fleas, lice, mosquitoes, etc. Apparently, infection 

 can not take place through the healthy intestines. The authors' experiments con- 

 firm this belief. 



The symptoms and lesions are described in considerable detail. In the Philippines 

 the disease is invariably fatal to horses. Thus far the authors have not observed the 

 disease in cattle or carabaos. In preventing the spread of this disease proper quaran- 

 tine and sanitary measures should be adopted. It is urged that all animals affected 

 with the disease be immediately destroyed and that the carcasses lie burned or that 

 flies and other biting insects be prevented from gaining access to the body. 



Poisoning- from harmful and adulterated feed stuffs, Eoehne (Berlin. 

 Tieriirztl. Wehnschr., 1904, No. 4, pp. ■~>9-61). — Several hogs were fatally poisoned by 

 eating rye meal. Post-mortem examination showed an inflammatory condition of 

 the intestinal mucous membrane. Petechia:' were observed on the auricles of the 

 heart. The cause of poisoning was not definitely determined. Similar cases were 

 observed in other animals. 



Certain cases were evidently due to adulteration of the milling products used as 

 feed. Samples of rye studied by the author contained 8.25 per cent of corn-cockle 

 seed. It was found that corn cockle exercised a poisonous action on hogs. The seed 

 of the hairy vetch was also shown to be poisonous to hogs although the green forage 

 was very palatable and quite harmless. The author recommends a stricter inspec- 

 tion of feeding stuffs and severe punishment for the sale of adulterated feed. It is 

 believed that in certain localities the loss of swine from poisonous feeds is as great as 

 from infectious diseases. 



Results from fighting swine erysipelas in the Grand Duchy of Hessen, 

 1901-1903, Lorenz (Ztschr. Thiermed., 8 {1904), No. 3-4, pj>. 201-281, dgm. 1) .— 

 The results of preventive vaccination under government auspices in the control of 

 this disease have proved to be very encouraging. Vaccinated animals have been 

 protected against infection and swine erysipelas has not been spread by the extensive 

 adoption of- vaccination, as claimed by certain authors. The expense of vaccination 

 is not great and is justified by the results. The extensive data upon which the 

 author's discussion is based are presented in tabular form. 



Swine plague and fowl cholera, Georges {Berlin. Tierarztl. Wehnschr., 1904, No. 

 l,pp. 5, 6').— Attention is called to the close relationship between these two diseases. 

 A seri< >us outbreak of swine plague occurred on an estate where the disease was pre- 

 viously unknown but where fowl cholera had prevailed extensively. The affected 

 hogs had been allowed to run in the chicken yard. 



A second outbreak of swine plague occurred under similar circumstances and with 

 much more convincing evidence of the relationship between this disease and fowl 

 cholera. Feed which had been contaminated by the diseased hogs was fed to geese 



