VETERINARY SCIENCE AND PRACTICE. 987 



purulent inflanuiiiition within a few days and a l<)(;al ahscess was formed 

 at the point of injection in which the micro-organism was found in 

 short or long- chains in small groups or in larger spheres. The organ- 

 ism is readil}' distinguishc^l from Sh'eptococeus niasfitldix. Bactermm 

 dipther!o!d(K was found in the pui'ulent secretion of the udder of a cow. 

 The udder was affected in only one quarter and the case had been diag- 

 nosed as tuberculosis of the udder. The author gives details of the 

 behavior of this micro-organism on different culture media by means 

 of wliich it is readily distinguished from the bacillus of diphtheria. 



The hereditary transmission of tuberculosis, G. Carrieee 

 {Arc/,. 21, d. Kq>rr. ,t Aiuti. Pafli., Park, 1. .svv., 12 {1900), No. 6, pp- 

 782-787). — In order to determine the influences of tubercle toxins 

 upon the constitution of the young of animals, the author conducted a 

 lumiber of experiments in inoculating guinea pigs. Five series of 

 experiments were conducted in which the guinea pigs received the dis- 

 tilled product of cultures of the tubercle bacillus, the residue of the 

 distillation of these cultures, an ether extract of the bodies of the 

 tubercle bacillus, a toluol extract of the bodies of the tubercle bacillus, 

 and a xylol extract of the same structures. The inoculations were 

 given several months before the period of gestation began, and as a 

 result of inoculation the young were born in diminished numbers and 

 cither dead or with feeble constitution. The author concludes from 

 these experiments that tubercle toxins influence gestation in lessening 

 the number of the yoimg, in causing the death of the fetus, the prema- 

 ture death of the young, or a weakened constitution. Further experi- 

 ments with young animals born under these conditions indicated that 

 th(\v ar<^ more sensitive to tulierculosis than normal animals. 



Tuberculosis and its management, C. E. Marshall {Mlclugan 

 Sta. Bui. ISIf., pj>. '207-266., Jigs. 7). — Fifty specimens of milk secured 

 from different parts of the State were tested for the presence of 

 tubercle bacilli. Of these samples 16 came from cows which had 

 reacted to tuberculin and in only one case was tuberculosis produced 

 in guinea pigs from these samples. The milk of tuberculous cows at 

 the college was frequently suljmitted to tests with the result that onl}^ 

 one sample of tuberculous milk was found. This sample came from a 

 cow which died a few da3^s afterwards of generalized tuberculosis. A 

 post-mortem examination of this animal showed the presence of the 

 disease in the udder. Of 13 tuberculous cows which were tested for 

 the presence of tuberculosis in the udder only one showed signs of 

 the disease in this organ. In order to study the distribution of the 

 tubercle bacillus in milk and its products, the author secured lung- 

 tissue from a tuberculous cow and mixed 1 lb. of the juice pressed from 

 this lung with 120 lbs. of milk. This milk was then passed through 

 the separator and subsequently an examination was made of the slime, 

 the skim milk, cream, butter, and buttermilk which were obtained 

 from the milk. The number of tubercle bacilli found in each of these 



