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will dry as quickly as possible. It has been thought harmful to work 

 trek oxen on the day of dipping, but so far as Rhodesia is concerned, 

 this objection does not hold good. Some 3,000 head were dipped 

 every month, but no ill effect was reported. It is a habit of the brown 

 tick and the red-legged tick to make their way into the ears and to 

 attach themselves to the eyelids, where they remain protected from 

 the dip, as animals which are accustomed to being dipped learn to 

 avoid the complete immersion of the head. Ticks under the root of 

 the tail often escape owing to some animals keeping the tail com- 

 pressed when being dipped ; others in the tuft of the tail are also 

 protected by the matting of the hair. If the best results are desired 

 in combating East Coast fever these parts should receive special 

 dressing in addition to the dipping [see this Review, Ser. B, ii, p. 163]. 

 Both the blue and brown tick will attach themselves to equines, 

 sheep, goats, and other animals, but in so doing largely lose their 

 infectivity to cattle. Nevertheless, a farm on which ticks are few is 

 better insured against disease and any system of dipping should, so 

 far as possible, include all classes of stock on the farm. By systematic 

 dipping, the cattle and other animals act as tick traps, collecting the 

 ticks and conveying them to the dip to be destroyed. In one of 

 Watkins-Pitchford's experiments, it was found that a badly infested 

 area was cleansed of brown ticks in as short a period as three months. 

 Ticks are most active and plentiful in the warm wet season. With 

 the onset of the summer rains the seed ticks emerge from the eggs 

 and eagerly seek a host for the purpose of feeding, and it is at that 

 time that clipping should be most vigorously applied, for it must be 

 remembered that any one female which arrives at the adult stage may 

 deposit several thousand eggs, which will rapidly hatch during the 

 favourable conditions of warmth and moisture prevailing at that time 

 of the year. Before coming to the conclusion that the systematic 

 dipping has succeeded in removing all the ticks from the property, it 

 is wise to select some animals laiown to be especially susceptible to 

 ticks and search in the ears and under the hair of the tuft of the tail. 

 The value of veld burning in the eradication of ticks has been somewhat 

 exaggerated, for when the grass is dry enough to burn, the ticks are 

 generally in the egg stage and safely hidden pending the arrival of 

 more favourable conditions. Old dusty kraals provide warmth, 

 moisture and a supply of suitable food for ticks. Infection has often 

 been found to originate in the kraal and has only been eradicated 

 after vacating it and burning or otherwise treating the manure in it. 

 Apart from the actual transmission of specific diseases, ticks are 

 responsible for considerable losses simply by reason of their presence 

 on cattle. The arsenical poisoning of stock is referred to [see this 

 Revietv, Ser. B, ii, p. 157] and the best antidote, both for absorbed or 

 swallowed arsenic, is prepared by diluting 3 oz. of solution of tincture 

 of perchloride of iron with 4 oz. of water ; by dissolving 1 oz. of 

 washing soda (carbonate of soda) in | pint of water, and by mixing 

 the two solutions. Three doses should be given at intervals of a quarter 

 of an hour. In addition, demulcent drinks should be given, such as 

 oatmeal gruel or a large quantity of linseed gruel. Animals that are 

 scalded may be dressed with carron oil (a mixture of lime-water and 

 linseed oil), or with an ointment made up of oxide of zinc with vaseline 

 or lard. A valuable coloured diagram accompanies this article showing 



