684 



REPORT OF THE COMMISSIONER OF AGRICULTURE. 



wlien injected liypodermically. Tliere is a slight purulent infiltra- 

 tion at tlio seat of injection, varying in intensity with the duration 

 of the disease. The bacteria are present in large numbers in all the 

 internal organs, giving the disease the character of a true septicsemia. 

 Fowls are insusceptible. Of seven pigeons inoculated, three died; of 

 four guinea-pigs, one. Mice are less susceptible than rabbits, but 

 more so than guinea-pigs. 



We must regard this microbe as more virulent to ral^bits and less 

 so to other animals than the one found in pigs. As regards its effect 

 upon the latter no extended experiments were made, excepting to note 

 that doses of 1"*^ culture liquid produced no effect upon two animals. 

 Perhap.. future experiments may throw more light upon the relation 

 of this microbe to the disease of swine, which we must consider, at 

 least for the present, as a hitherto unrecognized infectious pneumonia. 



UNITED STATES NEAT-CATTLE QUARANTINE. 



Wliole number of cattle received at the various stations from January 1, 188G, to 



January 1, 1887. ^ 



Littleton Station 495 



Garfield Station 504 



Patapsco 13 



1,011 



Table showing the number of cattle received at the various quarantine stations for 

 each month of the year 1886. 



Grand total, 1,011. 



No infectious or contagious disease appeared among the animals quarantined at the above stations 

 during the year. 



