SEVENTH ANNUAL REPORT. 12 
=I 
VERMINOUS BRONCHITIS AND PNEUMONIA. 
The number of cases of parasitic bronchitis and broncho-pneu- 
monia among the range animals, especially the elk, and to a 
lesser degree the buffalo also, impels me to raise the consideration 
of this question of contagion from the eighth place named in my 
previous report to the importance of fourth place in the present. 
Not only does this disease claim our special attention at this 
time by reason of the deaths it has already been directly respon- 
sible for, but particularly in consequence of its insidious but 
general undermining of health conditions in all animals involved, 
and unless early and more effectual steps be taken to reduce, 
and if at all possible to eradicate it from the Park while still 
new, the result will be most disastrous in the very near future. 
The laws which govern the propagation and dissemination of 
the stronguylus micrurus and stronguylus filaria (both of which 
are present here) are well understood in agriculture, where its 
ravages, notably in young stock, are not uncommon, especially 
along bottom lands of poor drainage with surface pools and sag 
spots. 
My experience of the past two years in the care of the animals, 
along with that previously gained in handling outbreaks of this 
disease in agricultural stock, leads me to point out that very 
many of these conditions prevail naturally in certain of the pad- 
docks in the Park, and others have been artificially produced in 
the course of park ornamentation. 
Medical treatment of this disease in the domestic ruminants 
avails but little, but the proper and adequate drainage of the 
pastures invariably brings such outbreaks to an end, hence I 
trust this great improvement in the interest of animal life and 
well-being may be consummated at the earliest date. 
CORPUSCLES OF RAINEY. 
The fifth condition coming rightly under the heaa of conta- 
gions, is also of great clinical interest, not only to students of 
comparative medicine, but more particularly to those who would 
make a study of wild animals in captivity. While Rainey’s cor- 
puscles of the primitive bundle of the voluntary and involuntary 
muscles of the domesticated herbivora, and to a lesser extent the 
omnivora, are of extremely common occurrence, their limited 
numbers and location, for the most part in non-vital parts with 
total absence of symptoms of their presence, has long since re- 
