VETERINARY SCIENCE AND PRACTICE. 291 



ments by the author upon the variations in the organism of actinomy- 

 cosis under diti'erent culture conditions. When this organism is 

 cultivated in ordinary alkaline bouillon without peptone or salt, 3 

 morphologically distinct forms were observed: (1) Unbranched and 

 branched iilaments; (2) delicate threads with thickenings and without 

 branches; (3) round large spheres. The second form was frequently 

 seen to develop out of this third form. 



Experimental cultures whicli were carried on for two years under 

 the same conditions and with the same results led the author to con- 

 clude that the organism of actinomj^cosis may vary exceedingly as to 

 its external appearance, has the power of adapting itself to the nutri- 

 ent medium and external conditions, and passes through a series of 

 stages, which include the bacterial type and reach to that of the higher 

 fungi. 



The organism is described by the author under the name of Oospora 

 lyrotexis. A detailed record is given of the appearance and behavior 

 of the organism under ditferent conditions and upon different culture 

 media. The variations of this organism are compared with those of 

 Oospo7\i hovw. In some of the experimental cultures chlamydospores 

 were formed, and the author believes that this and other pathogenic 

 organisms will be found to be forms of a series which extends from 

 ])acteria into the higher fungi. 



Tuberculosis of cattle, G. E. Nesom {South Carolina Sta. Bnl. 60^ 

 pp. Jfl.,f<js. 10). — The tirst part of the bulletin is occupied with a gen- 

 eral account of the nature and etiology of tuberculosis and a descrip- 

 tion of the method of applying the tuberculin test. A report is made 

 on 200 cattle tested with tul)erculin in the State. The cattle were 

 distributed in 6 herds, and the presence of tuberculosis was demon- 

 strated in only one herd. One doubtful case was found in the second 

 herd. In one herd of Q'o cattle, 61 of which were milch cows, 31 

 reacted. The veterinarian who had attended this herd had made a 

 diagnosis of tuberculosis and had confirmed it \i\ pout- mortem exami- 

 nation. Of the animals in this herd 9 showed a temperature of lOS*^ 

 or more before injection, and 3 out of these 9 gave a reaction of over 

 2° after injection. The ages of the animals of this herd varied from 

 1 to 1.5 years. In the other herds which were tested only one animal 

 was condemned as suspicious, and the p<mt-inorteni iindings were not 

 sufficient to make the diagnosis certain. The animal, however, was 

 considered tuberculous. Out of 2(iO tested, therefore, 32 animals or 

 16 per cent were found tuberculous, 31 of these, as already indicated, 

 being found in one herd. 



In the treatment of tuberculous herds the author reconnnends that 

 the Danish system of isolating suspicious animals be adopted. He 

 further reconnnends a nnuiicipal inspection of meats and milk and the 

 issuance of a license to dairymen oidy after all his milch cows have 

 been tested. 



