95 



encountered, while in some cases a single injection efiects a cure. 

 Like all other known drugs, tartar emetic is useless in the curative 

 treatment of equines infected with T. hnicei. Its only value in this 

 form of trypanosomiiisis is as a palliative when given regularly to 

 animals working under conditions involving exposure to tsetse-fiies. 



Little (A.). The Tampan or Poultry Tick. — Rhodesia Agric. Jl, 

 Salisbury, xvi, no. 1, February 1919, pp. 42-44. 



The best methods of dealing with Argas persicus (poultry tick) in 

 Rhodesia are described. If birds attacked by tick-fever are treated 

 immediately by dipping them in a solution of hot water and 5 per 

 cent, paraffin and soap-suds, or in a solution of 10 per cent. Jeyes' 

 fluid or similar disinfectant in hot water, and then removing them 

 to clean quarters, there is a chance of their recovery. 



The attempted cleansing of tick-infested houses when these are 

 made of grass, straw, or similar material is not recommended, it 

 being better to burn them. Fowl-houses made of corrugated iron 

 are best dealt with by placing a quantity of straw inside and setting 

 fire to it so as to make the house as hot as possible. Brick or wooden 

 houses should be first dealt with by using a plumbers' blow-lamp, 

 the flame being directed into all cracks and crevices, which should 

 then be sprayed with a 20 per cent, solution of Jeyes' fluid or similar 

 disinfectant in water as hot as possible, or with a similar solution 

 of paraffin and soap-suds. All coops, nest-boxes, perches, etc., should 

 be immersed for several days in the above solutions or in a dipping 

 tank ; all infested trees should be cut down and fences removed, and 

 the ground on which the houses stand should be saturated with paraf- 

 fin. Other disinfectants that can be used, though more expensive 

 than the above, include : — a 10 per cent, solution of carbolic acid ; 

 a 10 per cent, solution of caustic potash or soda, in the use of both 

 of which great care is necessary ; and a 20 per cent, solution of lysol. 



As preventive measures all birds newly received should be at once 

 dipped, and the routine dipping of all birds at least once a month 

 should be practised. 



Watts (H. R.). The Hog Louse. — Univ. Tennessee Agric. Expt. Sta., 

 Knoxville, Bull. no. 120, July 1918, 16 pp., 7 figs. [Received 

 29th March 1919.] 



Haematopinus siiis, L. (hog louse) is the largest species of louse 

 found affecting domestic animals, the infestation of which takes place 

 only by actual contact and not through infested pens and bedding. 

 The conspicuous white eggs are deposited on the lower half of the 

 body and above the shanks, and are destroyed as easily as the adults 

 by the application of any oil, the two best being crude petroleum and 

 kerosene, the latter of which must be mixed with an equal part of 

 cotton-seed or other oil. The eggs, which are laid to the number of 3 

 or 4 a day singly on the bases of the hairs, hatch in 13-20 days. 

 Mating takes place when the lice are 10-12 days old and is immediately 

 followed by oviposition. The length of life after reaching maturity is 

 usually 15-20 days, and there are 6-15 generations a year, the 

 usual number being 9-12. 



