CONTAGIOUS DISEASES OF DOMESTTCATKD ANIMALS. 421 



discoloratioDS on the heart and in the kidneys, the deep purple patches 

 on the liver, and above all the pigmentation or deep red congestion of 

 the groups of lymphatic glands and all parts of the body. The signifi- 

 cant congestion of the lungs was also present. The only remarkable 

 feature of the case was the excessive bloody engorgement and enlarge- 

 ment of the spleen, which is a constant feature of malignant anthrax, 

 but is usually found in other affections (malarial fevers, septicssmia), 

 in which there are profound changes in the blood. While, therefore, 

 this lesion is an unusual one, yet it is one to be expected in this disease 

 whenever the destruction of the blood globules or material changes in 

 the albuminoids of that fluid reach a certain point of extension. In an 

 animal that has been exposed to the infection of the swine-plague and 

 which presents all the other characteristic lesions, this one superadded 

 manifestation must be accepted as only implyiug a more than ordinarily 

 profound modification of the blood elements. 



POST-MORTEM EXAMINATION OF INFECTED LAMB. 



In my last report I gave the record of the inoculated lamb up to the 

 end of January. (See supplementary report : pages 101 and 112.) I 

 now add No. 2, the remainder of the record and the necropsy of the 

 same. The intestinal irritation and catarrh as manifested by the ten- 

 derness of the anus and the mucus discharges with the feces, together 

 with the elevated temperature and enlarged lymphatic glands, presented 

 much in common with the afiection in the pig. The marked eruption 

 in the ears might be accepted as representing the skin lesions of the pig. 



After death the more characteristic lesions were the purple mottling 

 of the liver, kidneys, and heart, the grayish consolidation of portions 

 of the lungs, and the deep pigmentation of the lymphatic glands in 

 general. The nodular caseous masses scattered so profusely along the 

 coats of the bowels in this case, and which are far from uncommon in 

 sheep, appear to consist of diseased and overdistended mucus crypts, 

 aud cannot be held as in any way connected with the contagion of the 

 swine fever. 



The absence of acute lesions, like red congestion of the lymphatic 

 glands, in this lamb uiay be partly accounted for by the mildness with 

 which the disease manifested itself, and by the fact that nearly four 

 weeks had passed since the last inoculation, and three weeks since the 

 last manifestation of abnormally high temperature. That the lamb suf- 

 fered from the poison may be safely assumed from the fact that the pig 

 Ko. 4 sickened with the specific fever after inoculation from it. 



POST-MORTEM EXAMINATION OF THE INFECTED MERINO NO. 3. 



Like the lamb, this was left with an imperfect record in our last re- 

 port. In this the life record is completed and the necropsy given, with 

 results very similar to those furnished by the lamb. Here again the main 

 changes consisted in purple mottling of the liver and heart, and the deep 

 pigmentation of the lymphatic glands. The yellowish-brown coloration 

 of the kidneys imi)lied antecedent changes probably of the nature of in- 

 flammation or extravasation. The caseous rounded masses found in the 

 bowels of the lamb were remarkable here by their absence in further 

 corroboration of the remark that these are independent lesions resulting 

 from pre-existing disease, and in no way connected with that now occu- 

 pying our attention. 



