180 SPECIAL BACTERIOLOGY 



is probably identical with the Rinder-seuche, as the Italian investigator 

 found an organism very similar to that of the Schweine-seuche, with 

 which they inoculated the following animals with positive results : a 

 young buffalo, a young pig, a young horse, a young cow, a sheep, also 

 mice, rats, rabbits, guinea-pigs, pigeons, and chickens. 



SEPTIC PLEURO-PNEUMONIA OF CALVES. 



This disease occurs in certain localities in an enzootic form, attacking 

 very young calves, the affected animals dying very quickly. The 

 lesions produced are somewhat analogous to those of pleuro-pneumonia 

 contagiosa, but the thickening of the interlobular connective tissue is 

 less marked, and the exudation of lymph not so abundant. There is 

 also a want of uniformity of colour in the individual pulmonary lobules 

 in some cases. Poels found sero-fibrinous exudates and pleuritic ad- 

 hesions frequent. Vanden also mentions the occasional occurrence of 

 inflammation of the pericardium, liver, kidneys, stomach and intestines. 



Microscopical Appearances. In the lung and muco-pus of the 

 bronchi small ovoid organisms are present, with rounded ends 1 //, to 

 1-5 /A long, and 0*5 //, thick. 



Staining Reactions. Stain easily with the ordinary aniline stains, 

 but not by Gram's method. When weak solutions of gentian violet are 

 used, they exhibit the bipolar staining characteristic of the septicaemia 

 haemorrhagica group of bacteria. 



Motility. Very motile. 



Biological Characters. Grows well in bouillon and on solid media. 



Pathogenesis. Rabbits die in twenty-four to forty-eight hours 

 either by ingestion or inoculation. Intrapulmonary injection of 1 

 drop produces pneumonia. Calves also died by intrapulmonary 

 injection ; sheep and dogs are immune. It is a facultative parasite 

 capable of living in the soil, which, according to Poels, explains the 

 presence of the disease on an infected farm. 



BACILLUS DYSENTERIC VITULORUM. 



(Bacillus of White Diarrhoea of Calves Jensen.) 



Described by Jensen as the cause of the so-called white diarrhoea 

 or scour occurring amongst calves. 



Microscopical Appearances. Small bacilli a little larger than the 

 chicken cholera bacillus. 



Motility. Non-motile. 



