INTO THE VEINS OF THE HORSE. 
87 
Five minuted afterwards, these tremors have increased and 
are becoming more general. The ears are pricked. The animal 
staggers as though he were inebriated ; and cannot be made to 
take a step backward but with the greatest difficulty. 
In ten minutes time he pushes involuntarily and convulsively 
forward ; his look is fixed and staring. Pulse 72. Respira¬ 
tion 20. 
Twenty minutes afterwards, he reels about more, but con¬ 
tinues to advance, thrusting his head against any obstacle in 
his way; and when that' is removed, pushing forward until he 
meets with another. He cannot be compelled to step back¬ 
ward. 
The symptoms increase, so that he injures himself by rushing 
with violence against objects; indeed, vision seems to be gone. 
Pulse 102. Respiration 41. 
At 2 o^clock he manifested all the symptoms of staggers; 
breaking out along the belly and extremities into a profuse 
sweat; conjunctiva reddened; buccal membrane deeply purpled. 
Two hours afterwards the animal was killed by insufflation 
of air into the jugular. 
Examination, Intestines brightened in colour, particularly 
the small, which tear easily and contain an unusual quantity of 
a yellow frothy liquid. Some nests of worms (filaria) in the 
stomach ; small red spots upon its villous surface. The lungs 
presenting appearances correspondent to the disease (broken 
wind) with which the animal was affected. Their parenchyma 
less injected than in cases of asphyxia. The right ventricle ex¬ 
hibiting many small circular black spots, pervading the parietal 
substance, and attended with ecchymoses. Also some upon the 
septum. The left ventricle has ecchymoses, but smaller and 
fewer in number. The left jugular, which received the injec¬ 
tion, presents a blush through almost its entire length. The 8th 
pair of nerves rather paler than usual, and their silvery hue ex¬ 
changed for a deep yellow. 
Slight serous effusion between the dura and pia mater; the 
cerebral mass highly injected, principally in the direction of the 
anterior lobes. The arachnoidean vessels gorged with blood. 
The cerebral pulp of a red dye, and when cut issuing blood, Ec¬ 
chymoses within the substance of the roof of the lateral ventri¬ 
cles ; also within the pituatury gland and the cornua hippo^ 
campi, —The cerebellum firmer than in the natural state; the 
membranes of the spinal marrow slightly injected at its origin. 
