VETERINARY MEDICINE. 683 



injeotion of yoghurt organisms will stimulate tlie production of a serum (opso- 

 nins), which is specific for the yoghurt bacterium but not for the organism caus- 

 ing calf dysentery. Feeding the mother animal with yoghurt organisms will 

 have no effect in regard to preventing dysentery in the offspring. 



A new species of piroplasm found in the blood of British cattle, J. 

 M'Fadyean and S. Stockman {Jour. Compar. Path, and Ther., 2fi {1911), 

 No. If, PP- 3fi0-35fi, figs. 8). — The authors describe the occurrence in the blood 

 of British cattle of what appears to be a new species of piroplasm. The name 

 PiropJasma divergens is applied to this species, the name being suggested by 

 the wide angle which is commonly formed by the twin parasites in the same 

 corpuscle. 



In addition to cases in which the piroplasm in question was observed, there 

 were others in which inoculation with similar material had either entirely 

 negative results or was followed by a temperature reaction (103° to 106°) 

 during the course of which no piroplasms were found. The experiments 

 reported show that P. divergens is an inoculable piroplasm, and that the period of 

 incubation after inoculation with blood varied from 4 to 8 days. The experi- 

 ments also prove the persistence of the parasite in the blood of recovered ani- 

 mals. The blood of one bull was found to be infective 135 days after the piro- 

 plasms were last seen in it. 



" In the case of one experiment an animal which had been inoculated 2^ 

 years previously with the P. higeminum (African strain), and had then reacted, 

 became infected when inoculated with the P. divergens. We hope, however, 

 at a later date to publish other experiments designed to show more conclu- 

 sively whether the one piroplasm protects against the other or not. 



"Lastly, special attention may be called to the fact that in the 2 cases in 

 which affected animals (Heifers 3 and 208) were treated with trypanblue 

 the drug appeared to have no serious effect on the P. divergens.'^ 



Inimunization of South African born cattle against redwater from a 

 practical standpoint, W. Robertson {Agr. Jour. Union So. Africa, 3 {1912), 

 Xo. 1. pp. 30-37, figs. 5). — A detailed account of the methods now in use. 



Observations in regard to the decrease and increase of streptococcic mas- 

 titis in barns, W. Rullmann {Gentbl. Bakt. [etc.], 1. Abt., Orig., 59 {1911), 

 No. 5-7, pp. 500-509). — In a barn where cleanliness was a feature no cow's 

 milk showed a leucocyte content which would point to the presence of strepto- 

 coccic mastitis. In another locality, in a barn having no modern methods of dis- 

 infection for either the animals or the milkers, a number of cows were found 

 which had mastitis and others which had none. The uninfected animals had 

 recently been introduced into the herd. The new animals were re-examined 

 after a period of 3 months, and the results showed that these also were rapidly 

 becoming mastitic. According to the author, soap and water should be freely 

 used, as they are particularly destructive to the streptococcus. 



Streptococcic infection in sheep, J. Wiemann {Ztschr. InfeJctionskrank. u. 

 Hyg. Haustiere, 9 {1911), No. 3-.'i, pp. 233-256; fl&s. in Berlin. Tierdrztl. 

 Wchnschr., 28 {1912), No. S, pp. 48, 49). — The examination of some cadavers of 

 sheep revealed the presence in 6 instances of streptococci in all organs of the 

 body. 



The author describes the symptoms of the disease from which these sheep 

 died, and points out that the disease has its origin from infectious material 

 which is present on the floor of the stalls. It can also be conveyed from sheep 

 to sheep. 



Glycogen and its relation to henioglobinemia, Ohler {Berlin. Tierdrztl. 

 Wchnschr., 27 {1911), No, 32, pp. 573, .57'/). — Horses which were fed while at 

 rest on a high carbohydrate diet eliminated sugar when put to work abruptly 



