178 DISEASES OF THE HOG. 
ond day after the change from dry food to green 
corn diarrhea set in and those which had this 
complaint bad had the brain symptoms.. The ma- 
jority of the affected ones became wild, would run 
about, some of them squealing, and would attack 
poultry of any kind and tear them if they got hold 
of them, they did not attack each other; very soon 
they would bump up against anything they came 
in contact with, because they had lost either their 
sight or sense. I think in most cases both the pigs 
were in such a state of excitement that it was im- 
possible to get a correct condition of the pulse or 
respiration; the pulse as found was full and not 
fast, but irregular; the pupils of the eyes were very 
much contracted; some champed the jaws and had 
considerable froth at the mouth as a result, others 
did not, but all were very restless without a mo- 
ment of relief; finally they became exhausted or 
partially paralyzed or a combination of both, first 
their hind legs, then the fore, they would then 
struggle on their side or bellies and soon die. I 
had one of the pigs killed, and made a hasty exam- 
ination of the head. I found the membrane of the 
brain much thickened and very vascular, in fact 
congested; there was considerable fluid beneath 
the arachnoid membrane, also in the ventricles and 
the meshes of the pia matter. The brain itself was 
not much changed, although there was some ap- 
pearance of congestion on the cortical substance 
and the cut surface of the medullary portion was 
thickly dotted with red spots. I found sufficient 
alterations of the membranes and brain to account 
