CONTROL OF TICKS 449 



duced and the kind or health of the host upon which the tick has been 

 feeding previously. Certainly some species of ticks produce forms of 

 paralysis, authentic cases having been recorded as resulting from the 

 bite of the spotted fever tick, and in the case of certain other species 

 in South Africa and Australia. It thus appears important that tick 

 bites be avoided as far as possible, and should paralytic symptoms de- 

 velop, a search of the patient for ticks, especially around the occiput, 

 should be made immediately. 



In regions where tick-borne diseases are known to occur, it is advisa- 

 ble to treat the bite with iodine or some other antiseptic. In the absence of 

 a physician, this may be done by inserting the point of a sharpened tooth 

 pick or match after it has been dipped in the iodine, in the place where the 

 proboscis entered. Before treatment, examination should be made to be 

 sure that the mouth-parts are completely removed, as they sometimes 

 break ofF when pulling out the tick. 



LIST OF EEFEUENCES 



Chapin, R. M., 1914a. — Arsenical Cattle Dips, U. S. Dept. Agr., Far' 



mers' Bull. 603, 16 pp. 

 Chapin, R. M., 1914b. — Laboratory and Field Assay of Arsenical 



Dipping Fuids. U. S. Dept. Agr., Bull. 76, 17 pp. 

 Cooley, R. M., 1911. — Tick Control in Relation to Rocky Mountain 



Spotted Fever. Montana Agr. Expt. Sta., Bull. 85, 29 pp. 

 Graybill, H. W., 1912.— Methods of Exterminating the Texas Fever Tick. 



U. S. Dept. Agr., Farmers' Bull. 489, 42pp. 

 Hunter, W. D., and Bishopp, F. C, 1911. — The Rocky Mountain Spotted 



Fever Tick. U. S. Dept. Agr., Bur. of Ent., Bull. 105, 47 pp. 

 Theiler, A., 1909. — Diseases, Ticks and Their Eradication. Transvaal 



Agr. Journ., vol. 7, pp. 685-699. 

 Theiler, A., 1913. — Inquiry into Dips and Dipping in Natal. Agr. Journ. 



Union of South Africa, vol. 4, pp. 814-829 (1912) ; vol. 5, pp. 51-67, 



249-263. 

 Watkins-Pitchford, R., 1911. — Dipping and Tick-Destroying Agents. 



Agr. Journ., Union of South Africa, vol. 2, pp. 33-79, with figs., July. 



