INFECTIOUS DISEASES. 517 
blood is thoroughly mixed with the matter, staining it evenly, instead 
of being mixed with it in the form of clots. At the commencement of 
the complication the animal may be subject to chills, which may 
again occur in the course of the disease, in which case, if severe, an 
unfavorable termination by gangrene may be looked for. If gan- 
grene occurs it is shown by preliminary chills, a rapid elevation of 
temperature, a tumultuous heart, a flaky discharge from the nostrils, 
and a fetid breath; the symptoms are identical with those which 
occur in gangrene complicating other diseases. 
Complication of the brain—At any time during the course of the 
disease congestion of the brain may occur; at an early period if the 
fever has been intense from the outset, but in ordinary cases more 
frequently after three or four days. The animal, which has been 
stupid and immobile, becomes suddenly restless, walks forward in 
the stall until it fastens its head in the corner. If in a box stall and 
it becomes displaced from its position, it follows the wall with the 
nose and eyes, rubbing it along until it reaches the corner and again 
fastens itself. It may become more violent and rear and plunge. If 
disturbed by the entrance of the attendant or any loud noise or 
bright light, it will stamp with its fore feet and strike with its hind 
feet, but is not definite in fixing the object which it is resisting, 
which is a diagnostic point between meningitis and rabies and which 
renders the animal with the former disease less dangerous to handle. 
If fastened by a rope to a stake or post, the animal will wander in a 
circle at the end of the rope. It wanders almost invariably in one 
direction. The pupils may be dilated or contracted, or we may find 
one condition in one eye and the opposite in the ether: 
The period of excitement is followed by one of profound coma, in 
which the animal is immobile, the head hanging and placed against 
the corner of the stall, the body limp, and the motion, if demanded of 
the animal, unsteady. Little or no attention is paid to the sur- 
rounding noises, the crack of a whip, or even a blow on the surface 
of the body. The respiration becomes slower, the pulsations are 
diminished, the coma lasts for variable time, to be followed by 
excesses of violence, after which the two alternate, but if severe the 
period of coma becomes longer and longer until the animal dies of 
spasms of the lungs or of heart failure. It may die from injuries 
which occur in the ungovernable attacks of violence. 
Complication of the feet—The feet are the organs which are next 
in frequency predisposed to congestion. This congestion takes place 
in the lamine (podophyllous structures) of the feet. The stupefied 
animal is roused from its condition by excessive pain in the feet and 
assumes the position of a foundered horse; that is, if the fore feet 
alone are affected, they are carried forward until they rest on the 
