VETERINARY SCIENCE AND PRACTICE. 1117 



various parts of the Dominion of Canada. Tlu' majority of outbreaks of ho^ cliolcn-a 

 reported were apparently due to the importation of hogs from infected j)arts of 

 Ontario or from the United States. • During the year 1,277 cattle were tested with 

 tuberculin for export into the United States. Of this number 72 reacted. Very Httle 

 testing of dairy cattle was done during the season. Experiments to determine the 

 period which elaiises between actual infection and the time when tubercuUn ])roduces 

 a reaction indicate that this jieriod varies from 8 to 50 days. It is recommended that 

 so long as an animal does not show pronounced signs of generalized tuberculosis its 

 progeny should bo reared. A number of cases of glanders are reported. The author 

 lu'lieves that a large percentage of glanderous horses ultimately recover without 

 treatment. It is also suggested that horses which cease to react to mallein arc no 

 longer infectious. 



Further studies were made on the Piclou cattle disease. This is a cirrhosis of the 

 liver. Nothing definite has been learned regarding its cause. A report by W. 11. 

 Pethick contains a description of the conditions which ac^tually prevail in the region 

 where this disease is observed. It is stated that cattle raisers usually consider this 

 disease as due to feeding upon ragwort {Senecio jacolnrmi) . Actinomycosis is said not 

 to be so frequent as in former years. A few cases of anthrax were observed, but the 

 infected area was closely quarantined and the ground subsetjuently burned over twice. 

 Blackleg prevailed to consideral)le extent in the Northwest Territories and ^Manitoba. 

 Verminous broncho-iineumonia appears to be on the increase among hogs in ( )ntario, 

 especially where these animals are kept under unfavorable hygienic conditi( >ns. iSricf 

 notes are given on mange in cattle and horses, and on sheep scab. 



Swamp fever in horses has prevailed in Red River Valley for a nund)er of years, 

 with very fatal results. This disease was investigated by the author and also by F. 

 Torrance. The symptoms and the course and lesions of the disease are described in 

 detail. It was shown that the disease is not surra. An organism w^as isolated which 

 occurs more frecjuently than any other in cases of swamp fever, but inoculation 

 experiments have thus far failed to demonstrate definitely its causal connection witli 

 the disease. A number of experiments were made on guinea pigs byC. II. Iliggins 

 to determine w hether electric currents of high frequency exert any curative influence 

 in cases of tuberculosis. The guinea pigs were inoculated with material obtained 

 from a tuberculous steer. The treatment consisted in exposing the animals for 10 

 minutes daily to the effects of electric currents. After a few days' treatment the 

 exposure was increased to 20 minutes j)er day. Detailed notes are given on the 

 progress and duration of the disease in different animals. It was found as a result of 

 tliese experiments that electric currents of high frequency exert a beneficial infiuence 

 in assisting animals to overcome the action of tubercle bacillus. The average life of 

 treated ainmals was 42.4 days, while that of untreated animals was 28.5. 



Report of the city veterinarian, W. W. Richards ( War DepL, Bumin of //(.s»- 

 lar Afair.% Philijipine Corn. Rpt. 1D02, pi. 1, pp. 380-383) .—The author presents brief 

 statistical notes on the numbers of domestic animals shipped into the Philippines from 

 different countries. A brief discussion is also given on the diseases which have been 

 observed among animals. The bladder worm was found quite extensively in hogs 

 slaughtered at the public abattoir in IManila. Among 1,500 horses inspected 40 were 

 found affected with glanders and all were killed. The public abattoir in Manila is 

 under the supervision of a native inspector and from the notes kept concerning the 

 numbers and conditions of animals slaughtered at this abattoir brief statistics are pre- 

 sented giving the number of condenmed animals and causes of condemnation. 



Work of the biolog-ical laboratory, D. C. Worcester {War DepL, Bureau of 

 Insular Ajfairs, Pldlippine Com. Rpt. 190 J, pi. 1, pp. 293, ^5.^).— Brief notes on the 

 work of this laboratory, which has been occupied largely in the preparation of sera 

 for the detection and treatment of Asiatic cholera, surra, glanders, hog cholera, etc. 



