114 



moist weather, first occurring before the presence of ticks is noticed, 

 though the larvae begin to infest cattle some time before their presence 

 is obvious to an ordinary observer. 



The authors agree with Mr. Pound that the condition is the result 

 of tick attack, but not, as he claims, an ordinary tick-sore, and they 

 agree with Mr. Hull that it is not the result of irritation caused by 

 excessive tick worry. 



Pound (C. J.)- Report on Mr. Munro Hull's Claims regarding Tick- 

 resisting Cattle. — Queensland Agric. Jl., Brisbane, xi, nos. 1 & 2, 

 January & February 1919, pp. 36-39 & 76-78. 



Commenting, on Mr. Hull's first claim that the number of female 

 ticks maturing on tick-resistant animals is small, the author remarks 

 that the number of ticks found on cattle in. infested areas is extremely 

 variable and largely due to the conditions of environment. Gross 

 tick infestation and so-called tick -resistance are not by any means 

 constant, i.e., at variable periods a heavily infested animal may 

 become lightly infested or a so-called resistant one heavily infested, 

 obviously necessitating the dipping or spraying of these alleged tick- 

 resistant cattle. 



Concerning the remark in the previous report [see above] that 

 the two cows selected for departmental experiment were subjected 

 to abnormal conditions, the author states that when in his charge 

 they were well fed and specially cared for, and not subjected to 

 conditions likely to produce a lowered resistance ; and further, they 

 were sprayed periodically ^\dth other cattle in order to keep down 

 gross tick infestation. 



With reference to the view that the influence of food is a factor in 

 the degree of infestation, the author points out that fat, healthy 

 cattle from shows are readily susceptible to tick invasion, and that 

 the experierce of those who have for years closely observed good 

 healthy cattle on station properties, and the constant arrival of fat, 

 healthy, tick-infested cattle at meat factories does not support it. 



In -an appendix the author categorically negatives the claims 

 [see previous paper] advanced by Mr. Hull in respect of the two 

 alleged tick-resistant cows lent for departmental investigation. 



Brown (W. G.). ^ Conclusions to Date upon the Experiments by the 

 Department of Agriculture and Stock in Relation to the best Means 

 to cope with the Maggot-fly Pest in Sheep. Queensland Agric. Jl., 

 Brisbane, xi, no. 2, i^ebruary 1919, pp. 60-63. 



The results of 5 years' experimentation on the control of the maggot- 

 flies in sheep show that, generally speaking, the specifics used with 

 success are more or less poisonous. One or two non-poisonous and 

 easily soluble ones have given fairly good results, though they are 

 liable to be washed out of the wool by heavy tropical rains. The 

 efiects of crutching remain good for about 3 months, but the large 

 amount of expensive labour required renders the method impracticable 



