117 
enough to produce marked activity in the larvae, then it 
would appear that the escape of larvae from the proboscis is 
nob very likely to occur. Experimental observations have 
Shown that the escape of larvae from the proboscis is not 
of frequent occurrence. (3) All animale do not ‘appear to be 
susceptible. (4) It seems possible that certain strains or 
varieties of the same species are more likely to produce lesions 
than others. 
n éach granuloma examined there have been a large 
number of larvae or necrotic areas present. This indicates that 
probably explained by the fact that the larger the number of 
arvae present in the proboscis of a fly the more likelihood of 
Skin coverin eg S 
scs fact that the necrotic foci are found close to or involving 
C. GnawNULOMATA AS FOUND IN NORTHERN AUSTRALIA. 
General.—A granulomatous affection of horses, commo 
3 " and descri y 
Anown as “swamp cancer, 
i an 
or tropical portions of Australia. The condition has. bee 
thoroughly described by Lewis, who studied it in the field, 
aad also conducted some experimental work in an attempt to 
artificially produce the disease. oe 
The present. writer was imp with the great similarity 
between this condition and the granulomata served in 
Southern Australia. On request, specimens pp swamp 
