MAMMALS IN THEIR RELATION TO SPOTTED FEVER. 



9 



recommended is 30 pounds of chopped alfalfa hay, 1 ounce of strych- 

 nia sulphate, and 5 or 0 gallons of water. Sprinkle this solution over 

 the hay chopped into 2- inch lengths until it is absorbed, then sack 

 the hay and it is ready for use. It can be distributed in the rabbit 

 runways, on the snow^, or on their feeding grounds. This preparation 

 will doubtless kill rock conies {Ochotona) also if distributed in their 

 rock slides in spring or placed in their " haystacks " in fall. 



Chopped fruit-tree prunings (2 to 3 inch lengths), treated with 

 strychnine-starch solution (p. 7), is an effective poison for rabbits. 

 It has the added advantage of not endangering the lives of birds or 

 stock. 



PORCUPINES. 



Porcupines are usually not numerous and are easily tracked on 

 snow and shot or trapped at their dens. Where their dens are among 

 inaccessible rocks they can probably be poisoned with strychnine in 

 potatoes or carrots, of wdiich they are very fond. A dose of the 

 poison as large as 2 or 3 grains may be necessaiy. Porcupines are 

 exceedingly fond of salt and will travel considerable distances to 

 secure it. Apples, carrots, potatoes, or chopped twigs from fruit 

 trees (2 inches long) coated with the starch-strychnine solution with 

 salt added should prove effective. 



LIST OF MAMMALS FOUND IN AND NEAR BITTERROOT VALLEY, 



MONTANA. 



By Clarence Birdseye. 



In the following list are mentioned all the species of mammals 

 known to occur in Bitterroot Valley and the adjacent mountain 

 slopes. A star before a name indicates that ticks were found on one 

 or more individuals of the species. It may be added that while no 

 ticks were found on the particular individuals of a number of species 

 collected, further investigations may be expected to reveal their occa- 

 sional presence on some of them. 



For determination of the several species of ticks mentioned in this 

 paper we are indebted to the Bureau of Entomolog3^ 



* MULE DEER. 



( Odocoileus hemionus. ) 



Mule deer occur more or less commonly on the lower slopes of the 

 mountains on both sides of the Bitterroot from Missoula south to the 

 head of the valley, as well as in surrounding mountains and valleys. 

 Deer occasionally w^ander down into the fields of the Bitterroot Val- 

 ley and I have seen their tracks on the school section at Florence. 

 In the more accessible parts of their range they seem to be rapidly 

 becoming scarcer, but on the South Fork of the Bitterroot they are 

 more abundant this year (1910) than for several years past. 

 100837°— Cir. 82—11 2 



