334 EXPERIMENT STATION KECORD. 



tuberculin tests upon tlie station lierd. Ten head of younj? cattle were 

 tested for the lirst time, and 10 other cattle, of which had been in 

 quarantine. Three of the cattle were condemned as being tuberculous, 

 while the others were decided to be free from the disease. The tables 

 show the temperature records of the test. 



The infectiousness of milk from tuberculous cotvs, H. L. Rus- 

 sell {Wisconsin Sta. Bpt. 1894, 2)}). 196-200). — The author states that 

 while some experimenters believe that the tubercle bacilli are only pres- 

 ent in the milk where there is a demonstrable lesion in the udder caused 

 by the disease, others hold that tuberculous animals produce infectious 

 milk, even though the disease may not be present in the lacteal organs. 



Rabbits and guiuea pigs were inoculated with milk from a number of 

 tuberculous cows in the station herd, using the fresh milk or the sedi- 

 ment in the bottom of sterilized Erlenmeyer flasks in which the milk had 

 been treated centrifugally. The results are tabulated. The experi- 

 mental aniBials were infected by the milk of one animal only. Her 

 udder was badly swollen, and a microscopic examination revealed the 

 presence of numerous tubercle bacilli in it. 



The author's conclusions are as follows: 



"From these limited experiments the conclusion in this case seems warranted that 

 the milk from these tuherculoiis animals was not infectious Avhere the disease was not 

 localized in the udder. Even where the udder was possibly aliected the bacilli were 

 not present in the milk in sufiftcient quantities to call forth a diseased condition in 

 the susceptible animal inoculated with small quantities (1 to 4 cc), except in a single 

 instance, where the animal had the disease in an aggravated form. These results add 

 somewhat to the data on this subject, but the amount of evidence must be consider- 

 ably augmented before definite conclusions are drawn as to the infectiousness of milk 

 from tuberculous animals where the disease does not affect the udder." 



Relation of separator slime to tuberculosis in hogs, IT. L. 

 Russell ( ^yucons^n Sta. Rpt. 1894, pp. 201-204). — The author men- 

 tions the observations of some German writers to the effect that in 

 Germany and Denmark the percentage of tuberculous hogs is much 

 greater where the cream is raised by separator than where it is raised 

 by gravity. 



August 23 four G-weeks-old pigs from the same litter were divided 

 into 2 lots and fed on skim milk and grain — equal parts of shorts and 

 corn meal. One lot received in addition the separator slime from the 

 University creamery, amounting to 7 or S lbs. a week, or 5.4 per cent 

 of the whole amount of food consumed. The test ended N"ovember 10 

 and the pigs were killed November 13. The autopsies showed no signs 

 of tuberculosis. 



According to the author the experiment shows that the separator 

 slime when fed in the proportions stated did not have infectious prop- 

 erties when introduced into the digestive tract of the animal. 



Check list of the animal parasites of chickens, A. Hassall ( V. S. Dept. Ar/r., 

 Bureau of Animal Industry Circular 0, xtp. 7). — This list is intended to contain all of 



