184 DISEASES OF SWINE AND CrilEll AJ5MALS. 



Three were after the first mode and seven after the second mode of at- 

 tack. 



Believing that the theory of blood-jwisoning was correct, I did not see 

 any reason for a change of treatment from that followed in the case of 

 the first herd. Those suffering from the disease by the first mode of at- 

 tack were first given salt and water and afterward the iron, as in the case 

 of the first herd. Those suffering from an attack in the second mode 

 received a dose of linseed-oil, and afterward the iron and i)owder as de- 

 tailed in the case of the first herd. Many had to he urged and forced to 

 drink. Some refused altogether to partake of anything. I sum up the 

 deaths by class : 



Of class 1 None. 



Of class 2 2 



Of class 3 3 



Of class 4 Ti 



Of class 5 8 



Total number of deaths 18 



Nine had died before treatment, making twenty-seven in all. 



Post-mortem examinations. — In iiiiikmg post-onortem examinations, I was 

 afforded opportunities in Nebraska (besides those under my own obser- 

 vation), by Mr. A. J. Eainey, a veterinary surgeon, who had a large 

 number of animals under treatment. Also, by a IMr. Dudly, an enter- 

 prising farmer residing in the neighborhood of Syracuse, who gave me 

 permission to examine his herd, in any manner I saw fit, in furtherance 

 of my object. 



In my description of appearances after death, I shall confine myself 

 to one or two dying under each mode of attack. 



Sog six months old. — The blood. — This had the appearance of water 

 colored yellow. Fibrin broken up, and a want of hematin. Excess of 

 serum and salt. Poured upon the ground it was absorbed, leaving 

 scarcely a perceptible stain. 



The brain. — Effusion of serum in cavity of skull, and softening of the 

 brain. Effusion in the membrane of the eye. 



The lungs. — Effusion of serum in pleural cavity. Base of lungs some- 

 what congested, apparently of a passive character. 



The heart. — Normal condition, but pale. 



The stomach. — Normal condition, the spleen enlarged. 



The liver. — There was but little bile in the gall-bladder ; the organ 

 was darker in color, with petechial spots. Kidneys pale. No ulceration 

 of intestines. This hog died from the first mode of attack. 



Hog six months old. — This hog had recovered from an attack in the 

 first mode. Was left blind, and had an ulcer on one of his feet. He 

 was killed. Was apparently free of disease j the blood was of the 

 proper consistency and color, and coagulated. Blindness was the effect 

 of the disease. 



Examination of those dying from second mode of attaclc. — Hog six months 

 old. — This hog was very thin, nearly all the fat having been absorbed, 

 Could detect no disease of the brain. In this case there was the usual 

 diarrhea, cough, &c., belonging to this class. Heart normal in structure, 

 but pale. No effusion in jileural cavity. 



Lungs. — These presented the appearance mentioned by writers on this 

 disease as gray hepatization. 



Stomach. — This i)resented evidences of disease. Two ulcerated patches 

 were found, nearly healed, circular in form, and eight or ten inches in 

 diameter. The dead mucous membrane was still adherent, but was 

 easily removed. 



