384 REPORT OF THE COMMISSIONER OF AGRICULTURE. 
APPENDIX. 
RecorpD or Dr. Law’s EXPERIMENTS.—No. 1. 
Male white pig, eight months old ; no special breed. Formerly fed offal from a slaughter-house 
Temperature 
of body. Remarks. 
104. ie ¥F.| Had escaped and was caught after a good chase. 
103. 25 
103. 5 
102.75 Inoculated from quill charged with dried liquid from infected 
lung; matter from North Carolina, and five days old; quill 
dipped five minutes in solution of bisulphite of soda—: 1 :: 500. 
6 | 5p.m...-. 108. 25 
Wf) bbe eee 100 
8 | 12 noon LOIS 
GFN) 1b a ae 103. 5 bd 
TOA ay eo ee 101. 25 
11 | 10a.m--- 102 
2\4p.m..... 99 | 
Was found sprawling upon its belly unable to stand; breathing slow, deep, pant- 
ing, and labored ; snout hot, dry, and of a leaden color; ears and feet warm, bluish, 
but without any rash, eruption, blotches, or extravasations. Blood appears at the 
arms. An hour later this pig died. 
Post-mortem examination thirty-six hours after death.—Body in excellent preservation 5 
condition low; skin scurfy along the back; snout livid blue, but without petechia. 
Digestive organs: Tongue has papille, at its base reddened ; a similar blush appears 
on the fauces and pharynx. 
Stomach and bowels normal. 
Fiver firm and sound. Kidneys and bladder sound. 
Urethra (intrapelvic) deeply congested, almost black, but without any obstruction. 
Parasites in abdomen: A few tricocephali (whip-worms) in the large intestines; a hydatid 
in the pelvie fascia. 
Chest: Pleura normal; pericardium healthy, with a smail quantity of serum. 
Right heart: Auricle and ventricle filled with dark clotted blood. 
Left heart: Auricle contains a small clot of black blood; ventricle empty. 
Lungs: A great part of these is in a condition of carnification or infarction. This is 
confined to definite lobules or groups of lobules, the collapsed, red, fleshy aspect of 
which is in marked contrast with the full form and pale pinkish-white color of the 
remainder. 
The air passages (bronchi and bronchia) contain small portions of the contents of the 
stomach which have been vomited up and drawn into the lungs in the last violent 
efforts to breathe. The air-passages leading to the collapsed lobules contain large 
quantities of a watery mucus and pellets of worms (strongylus elongatus) which com- 
pletely block them. The obstructed terminal bronchia are dilated, and have their 
mucous membrane variously reddened and congested. Around these bronchia the 
connective tissue is strongly congested and filled with extravasated lymph, by which 
the vessels passing to and from the lobuletts are compressed and obstructed. In view 
of this state of things, the explanation of the process of infarction in the lobules is 
easy; the irritation and congestion caused by the worms in the infested air-tubes ex- 
tended to the surrounding connective tissue and the sheaths of the accompanying 
blood-vessels; the exudation of lymph compressed and obstructed the vessels, inducing 
stagnation, congestion, and exudation in the whole substance of the lobule or lobuletts 
to which these led. Hence the invariabie connection of the infarcted lobule, and the 
blocked, congested, and worm-infested tube that led to it. 
