BY T. HARVEY JOHNSTON AND M. J. BANCROFT 179 
102.0, dried exudate present, also a few ticks ; Pride, 102.6, 
ticky : Fairy, R., 102.8, clean, traces of exudate. 
It will be seen then that Mr. Hull’s contention that his 
resistant animals have a normal temperature one to 24 
degrees higher than the others during the winter months, 
is not borne out by our observations, as the variations 
noticed fall within the normal limits. Again, his contention 
that, during the winter months, such resistant cattle allow 
more ticks to mature on them than during summer, while 
the reverse is the case with non-resisting stock, is also not 
verified by our observations. 
Mr. A. W. Johnston, of Cowleigh, Thagoona, forwarded 
us (31/5/19), a report on the animals which had been running 
for so long on Mr. Hull’s property (J. and B., 1918, p. 
263-5) On the red heifer R.O.8 and the red and white 
R.O.8 only an odd tick was to be seenat anytime. J.4.V. 
was in the same condition though running regularly with a 
herd that was badly tick infested. None of these three 
animals had at any time since their return carried ticks 
in sufficient numbers to warrant dipping, though they hag 
been so treated along with the rest of the herd. The remain- 
ing two heifers T.3.0. were not at the time available for 
inspection, but Mr. Johnston stated that when last seen 
they were decidedly less infested than the remainder of the 
herd in whose company they were. The exudate referred 
to in our previous paper had not been noticed: We are 
not at present in a position to comment on this report. 
Mr. I. Titmarsh, Carrington, Kalbar, wrote in September 
last stating that he had reluctantly followed Mr. Hull’s 
ideas, and had not dipped his herd for the past two years, 
yet his cows and calves were free from ticks. Ticky stock 
had been introduced from elsewhere, but after having been 
on his property for a year had become tick-free. 
