312 
MALIGNANT FEVER OF SWINE. 
which stagnation was itself caused by the dilatation of the cavi¬ 
ties, and the thinning of their muscular sides. It is also possi¬ 
ble that the formation of the clot preceded the dilatation of the 
heart; nevertheless, I am rather inclined to the first opinion, 
since the heart must have been some time in becoming so much 
dilated, while the clot could have been much more rapidly 
formed. 
It is not a new thing to find large clots of blood affixed to the 
surface of the serous membranes of the heart, and to the large 
vessels, and that have existed for a long time previous to the 
death of the animals in which they are found. All who have 
examined many carcasses with care must be convinced of the 
fact. 
As nearly as I can recollect, M. Girard, jun., who was both a 
quick observer and a talented writer, has related some facts that 
are analogous to those which I have given here. Hundreds of 
times I have found clots of blood, diversely placed and diversely 
composed, in the veins of the scrotum—in the veins of the mam¬ 
mae—in the testicular veins—in the veins of the lungs; espe¬ 
cially in thick-winded horses, which occasionally present very 
singular aneurisms of the heart—in the venous plexuses of the 
nasal septum ; and particularly in glandered horses, the plexuses 
of whose nasal veins appear as if they were injected with co¬ 
loured wax—in the arterial trunks of the stomach and intestines, 
Sec. &c. 
Jouv/l Thearique et Pratique . 
Memoir on the Malignant Fever of Swine. 
By M. Roche-Lubix, V.S., St. Affrique. 
This disease is most frequent and fatal in the arrondissement 
of Saint Affrique, in Aveyron. There is considerable variation 
in its character and symptoms. It oftenest attacks the male, 
and the strongest and those in the best condition, and without 
distinction of age. The attack is sudden and violent, and the 
disease runs its course with the most astonishing rapidity : in 
the space of twelve hours the inhabitants of a whole piggery 
have been destroyed by it. Sometimes, however, its symptoms 
are not so intense or alarming; its progress is slower ; and the 
veterinarian has some hope of being able to combat it with suc¬ 
cess. Its nature, and the proper mode of treating it, will be 
best understood if it is divided into two species or classes. 
