X FOWL ENTERITIS— NATURE OF DISEASE 89 



The thickness of the bacilli . 0.3-0.4 /ti. 



The length of the single bacilli . 0.8-1.6 /x. 

 Some as long as 2 /a. 



The mucus of the intestine of the Orpington 

 fowls contained the bacteria, just as the mucus of 

 the fowl -cholera fowls, in almost pure cultivation, 

 either as spherical or oval coccus -like organisms, 

 singly or as dumb-bells, or as distinctly cylindrical 

 bacteria (Figs. 43 and 44). Examining in salt 

 solution or broth the fresh bacteria of the blood or 

 spleen of a fowl dead of fowl cholera, or of gelatine 

 cultures of the same, there are no motile bacilli to 

 be met with. The bacteria of the Orpington fowls 

 are also devoid of motility, for in no preparation, 

 either of the blood or spleen, or of gelatine or other 

 cultivations, did the bacilli reveal anything like 

 motility. As has been already mentioned, inoculat- 

 ing subcutaneously with the blood or spleen-juice 

 of a fowl dead of fowl cholera, fowls, pigeons, 

 or rabbits, invariably a fatal result is produced 

 in one or two days, or even less, with the 

 characteristic symptoms and post - mortefn appear- 

 ances of fowl cholera. Experiments of the same 

 character were therefore instituted with the blood 

 and spleen tissue of the Orpington fowls, but the 

 result was totally distinct from that obtained in fowl 

 cholera, for the pigeons proved quite insusceptible ; 



