154 J. B. CLELAND. 
white, yellow and piebald ( grey and white) mice were seen. 
The following approximate table of weights and measures 
is interesting :— 
‘“One mouse averages in weight slightly over half an 
ounce, 
‘*1 ton = 60,000 mice. 
‘1 drayload—15 ewt. = 45,000 mice. 
‘*1 million mice—22 drayloads = about 17 tons. 
»‘Rats were occasionally caught in the pits with the 
mice.’ 
As Circular No. 1, dated May 12th, 1917, Mr. England 
issued Directions for Double Fencing Wheat Stacks for 
Trapping Mice. For this device he had then applied for a 
patent. 
DISEASE IN THE VISITATION MICE. 
During the height of the mouse visitation, newspaper 
and verbal reports came to hand as to the presence of dis- 
ease in them, and also of the occurrence of sores in those 
men brought more or less in touch with the mice. Still 
later, medical men recognised, in the mouse districts, a re- 
markable increase of ringworm in human beings, not neces- 
sarily in those only who were engaged in handling wheat. 
As regards disease in the mice themselves, a number of 
batches of mice said to be affected, were submitted to us 
from time to time by the State Wheat Office. As some of 
these, before arrival, had travelled long distances, and so 
arrived in a decomposed state, examination of them led to 
little result. Amongst the others two diseases were met 
with, one consisting of subcutaneous abscesses in the neigh- 
bourhood of the joints of the legs, the other of mouse favus. 
I have not noticed, in the mice I have examined, any other 
ringworm-like lesions than the heaped-up crusts of favus. 
It is possible, however, that ringworms causing only small 
