BY T. HARVEY JOHNSTON AND M. J. BANCROTTT. 237 



20. That when the tests were made ticks were wholly 

 .•a.hsent from ordinary stock, but were found in small 

 numbers on all the special cattle under test (minimum 3, 

 maximum 7). 



21. That 1 estimate the total possible crop of female 

 ticks per cow for the year to be from 50-100 only. 



22. That if all the stock on a farm or in the State were 

 infected with this peculiarity the cattle tick would be 

 exterminated in a single season. 



23. 24, and 25. Of no importance. 



Mr. C. J. Pound, Government Bacteriologist, Depart- 

 ment of Agriculture, Queensland, who had two of Mr. 

 Hull's cattle, Clover and Tinkerbell, under his control for 

 some time, adversely reported on the claims in so far as 

 they might be held to apply to these two animals specially 

 selected b}'^ Mr. Hull as examples of tick resistant cattle. 



Mr. Pound's findings were as follows : — 



Claims, Nos 1, 5, 6, 21. The two cows were placed 

 in a ticky paddock for 27 days and then removed to, and 

 kept in, stalls for 25 days. During 23 days of the latter 

 period 230 fully mature ticks were taken from Clover and 

 860 from Tinkerbell Mobile large numbers dropped off and 

 were found on the floors of the stalls, these not being 

 included in the totals. 



Nos. 2 and 3. As a result of 27 days exposure in a 

 ticky paddock these two cows became so badly tick 

 infested and so suffered from tick worry that dij)ping and 

 epraying would certainly have been justified. 



No. 4. The degree of infestation depends entirely on 

 the conditions of environment. 



No. 7. On each occasion that the two cows were 

 exposed to ticky pastures they became covered Avith sores 

 while portions of the skin were denuded of hair. 



No. 8 and 9. Clover's calf (13 months old in August, 

 1914) has been more or less heavily tick-infested since it 

 was a few weeks cfld. 



No. 10. A number of cattle, young and old, and of 

 either sex, running with these two cows have not acquired 

 the so-called tick-killing property, nor had he been successful 

 in transmitting the alleged immunity by vaccination. 



