BA CILL US ANTHRA CIS S YMPTOMA TICI. 567 



most virulent material and from the disease. Fourteen 







days are allowed to elapse between the two inoculations. 

 The results obtained from this method of preventive in- 

 oculation seem to have been very satisfactory. Accord- 

 ing to the statistics of Hafner, Luchanka, Hess, Strebel, 

 etc. (1885-93), including many thousand cattle treated, 

 the mortality, which among 22,300 non-inoculated cattle 

 was 2.20 per cent., has been reduced to 0.16 per cent, 

 in 14,700 animals inoculated. 



To recapitulate briefly, the principal points of differ- 

 entiation between this bacillus and the bacillus of malig- 

 nant oedema, which it closely simulates, are smaller; it 

 does not develop into long threads in the tissues; it is 

 more actively motile, and forms spores more readily in 

 the animal body than does the bacillus of malignant 

 oedema. It is pathogenic for cattle, while malignant 

 oedema is not; and swine, dogs, rabbits, chickens, and 

 pigeons, which are readily infected with malignant 

 oedema, are not, as a rule, susceptible to symptomatic 

 anthrax. 



