February, '15] 



COOLEY: SPOTTED FEVER TICK 



47 



of the newspapers which has become universally favorable. The 

 second evidence appears in the attitude of the legal representatives 

 of Counties A, B and C, who seem unwilhng to tolerate any inter- 

 ference with the law under which the work is done. The third evi- 

 dence is found in a post card census recently taken by the writer. A 

 mailing list was made up from the telephone directory — so many A's 

 so many B's, so many C's and so on through the alphabet, were taken 

 from the lists of the various cities and towns within the limits of 

 Counties A, B and C. To each member of this mailing hst a letter 

 was sent in which the expenditure that had been made during each 

 year of the work in his county was set forth and he was asked to state 

 on a stamped addressed card whether he had received an amount of 

 protection equivalent to his share of the expenditure, and whether he 

 approved the continuance of the work. One hundred and ninety-one 

 cards have been received, 117 of which hold that they have had value 

 received, 52 are doubtful, and 12 are sure they have not. Of the 

 191 cards received, 178 want the work continued and 13 desire it 

 stopped. 



Pkesident H. T. Fernald: The next paper on the program will 

 be presented by R. A. Cooley. 



THE SPOTTED FEVER TICK (DERMACENTOR VENUSTUS 

 BANKS) AND ITS CONTROL IN THE BITTER ROOT 

 VALLEY, MONTANA— A REVIEW 



By R. A. Cooley, Bozeman, Montana 



The purpose of this paper is to present in the briefest form, a sum- 

 mary of our knowledge of the Rocky Mountain spotted fever tick 

 {Dermacentor venustus Banks) in Montana and to outline the control 

 work now in progress. 



This arachnid is the subject of much interest in the northwest for 

 three reasons: (1) It is the carrier of Rocky Mountain spotted. fever, 

 (2) Recently it has been shown to be responsible for a new disease of 

 man and certain domestic animals which has been given the name, 

 'Hick paralysis, " and, (3) Finally, it is well recognized as a trouble- 

 some parasite of man and domestic animals. 



Rocky Mountain Spotted Fever 



By all odds the most important of the three is the relation to spotted 

 fever. This disease has been scatteringly recorded over a wide ter- 



