VETERINARY SCIENCE AND PRACTICE. 889 



When secondary to tuberculosis, foreign bodies, etc., these cases are 

 easily recognized. 



Nothing definite is known relative to traumatic or transit pneumonia 

 due to blows on the thorax. The interlobular disease and the persistence 

 and existence of lung disease are apparently to be attributed to bacteria 

 of the swine plague group present in broncho-pneumonia in pure cul- 

 tures found in healthy cattle in the upper air passages. Most of the 

 cultures made from the parenchyma, interlobular fluids, and exudates 

 in interlobular pneumonia remain sterile. Other differences than the 

 bacteria of bovine pneumonia being more frequently provided with a 

 capsule than those found in swine are not constant. Outbreaks of 

 infectious pneumonia and septicemia in calves are thought mostly due 

 to highly virulent rays of the same group of bacteria. 



Two varieties of the tubercle bacillus from mammals (pp. 149-161). — An 

 account is given of an investigation of a bacillus from an animal of the 

 bear tribe (Nasua narica) and from a bull. The morphological and 

 other characteristics seem to indicate differences in the germ which the 

 author seems inclined to believe to be valid. He points out the necessity 

 for more information on the existence of races of tubercle bacilli (both 

 human and bovine). 



Xotes on the evolution of hog cholera outbreaks (pp. 161-106). — The con- 

 clusions arrived at are that swine themselves are the chief carriers of 

 the infection. The custom of not immediately removing dead hogs 

 from the neighborhood of the living is deprecated; that the dis- 

 ease may be perpetuated and spread by preventive inoculation with 

 living cultures; that the waves of epizootics which sweep over the 

 country at long intervals are probably to be attributed to a sudden 

 increase in virulence of the specific bacilli after they have passed 

 through the bodies of swine for several years; that pathogenic bacteria 

 are always a menace. 



iSu-ine erysipelas or mouse septicaemia bacilli from an outbrealc of si cine 

 disease (pp. 166-174). — A somewhat detailed account is given of the 

 morphological, biological, and pathogenic action of this bacillus which 

 was not definitely proved to be pathogenic toward swine. Attention 

 is called to the importance of rational feeding as a preventive in regions 

 infected with certain diseased germs. 



Notes on peculiar parasitic infections of the liver in domesticated animals 

 (pp. 174-179). — The frequent existence of minute focal lesions in the 

 liver of some domestic animals which may in all cases be due to ova of 

 parasites or disintegrated particles of the same brought in from the 

 digestive tract is shown to complicate the diagnosis of disease, since 

 such lesions may sometimes be attributed to tuberculosis, glanders, or 

 other serious affections. 



Two cases of cirrhosis of the liver (pp. 179-183, pi. 1). — A semipopular 

 description of a case of cirrhosis of the liver in a steer and of one in 

 the liver of a horse. 



1 (5436— No. 9 7 



