ON THE CIIARBONN EUX TYPHOID DISEASE OF PIGS. 561 
First Class. 
Symptoms. — The pigs that are ranged in this class often die 
without there being the slightest precursory symptoms. 1 have 
only been able to collect the following symptoms : sudden loss of 
appetite — general prostration of strength — small and frequent pulse 
— the ears drooping, of a dark colour, and tender to the touch — 
the eyes projecting and haggard — the conjunctiva of a deep red — 
the mouth half open, red, and charged with foam — a leaden tint 
stealing over the part — frequent and laborious respiration — anxiety 
— plaintive cries — frequent convulsions — the appearance of red 
spots, and becoming more and more deep at the ears, the belly, 
and the inner surface of the thighs — palsy of the hind limbs — 
involuntary and foetid discharge. In less than an hour this animal 
died. * 
Post-mortem appearances. — The carcass, which was opened 
almost immediately, offered externally, the belly projecting — the 
mouth large, and of a violet colour — the tongue thickened, black, 
and hanging from the mouth — black spots varying in size from one 
inch almost to four, most numerous under the belly, the groin, and 
on different parts of the body ; these sometimes unite to form large 
patches ; these spots, which can be only the result of the agglome- 
ration and decomposition of blood in the cellular-adipose tissue of 
the animal, and also a yellow and brown seriosity, pervading every 
part. 
The lungs are large, brown, filled with blood, and the ventricles 
of the heart gorged with coagulated blood. Its envelope presents 
various large ecchymoses — the pleurse present the same appearance. 
The bronchi and trachea are filled with a yellow humour. The 
meninges are thickened, and covered with black and coagulated 
blood. The cerebral substance presents inflamed points deprived 
of their serosity — the rachidian sheath was, also, exceedingly 
thickened. I have often stated the ramollissement of the whole of 
the spinal cord, but still oftener that of the lumbar region. At the 
same time, I have witnessed decided paralysis of the hind limbs. 
The abdominal viscera have exhibited numerous disorders in the 
various openings which they have presented. The liver and the 
spleen have been exceedingly voluminous and gorged with blood. 
The biliary vesicle has been much contracted, containing a thick, 
black, and foetid bile. The epiploon, the mucous membrane of the 
stomach and. intestinal canal, are spotted with black points. These 
same thickened membranes, of a deep red hue, in filtered with 
blood or serosity — disorganized or decomposed — the mesentery', 
VOL. XVII. 4 E 
