582 DISEASE IN WILD MAMMALS AND BIRDS 
The character of the early bronchopneumonia in the 
first is peribronchial, and there is distinct indication of a 
generalized process suggesting a hematogenic origin, 
whereas there is but one area of bronchopneumonia in the 
second — a necrotizing lesion beginning in the bronchus. 
Streptothrices are rare in the first case but reasonably 
easy to find in the second. This latter is one of the cases 
which seem to support the idea that nasosinusitis may 
have a streptothrix as its basis in the absence of the usual 
picture of necrotizing "lumpy jaw." These cases also 
indicate that pneumonia may originate either by inhala- 
tion or by the blood stream, and that perhaps the hepatic 
lesion may have the latter origin. There have been two 
instances of necrotizing periarthritis, in one of which the 
threads could be found. This also suggests that spread 
through the blood stream can occur, possibly in this 
respect to places where previous injury prepares for the 
reception of the organisms. 
Thigh-striped Wallaby {Macropus thetidis). Streptothricosis of soft 
tissues of jaw. Early bronchopneumonia. Acute fermentative gastri- 
tis. Acute general infiltrative enteritis. Cloudy swelling of myocar- 
dium. The general condition of coat and of nutrition is good. The jaws 
are wide and the maxillocei'V'ical region full, both due to an indurative 
inflammation of the gums, tongue, floor of mouth and upper cervical 
tissues. At either side of the tongue and running around body of 
maxilla both sides, the inflammatory tissue becomes softer and there 
is an area about one inch long where it is soft, gray and contains yellow 
gray bodies in a grumous matrix. The teeth seem sound as do the ex- 
ternal buccal tissues. The nasopharynx is free from induration. The 
bone on the left side shows a periosteitis with involvement of the super- 
ficial layers of bone, while on the right side the periosteum is swollen 
and opaque but the bone is free. The thyroid is imbedded in the edema- 
tous infiltration of the lower cervical tissues. The pleura? are free of 
fluid and adhesions. Lungs are collapsed, uniformly pink somewhat 
emphysematous at places but give the impression of being lumpy. On 
palpation numerous nodular areas are detected. These prove to be 
peribronchial areas of gray-red solidity which swell out on section. 
The bronchus contains a gray and bloody thick mucoid matter. There 
is distention of the mesenteric vessels especially near the enteric inser- 
tion. The liver surface is smooth, edges very sharp, consistency finn, 
tough, resilient, color deep red, the section surface is glistening, moist, 
