THK STKIIMOI) (iROl ND SCil lintKLS OF ( OLi HiADO 



15 



Htomach A o. Ji4. — Yoiiiij; female; ti*api)ed Sej)teniber 1914, 

 at Fort Collins, alono- roadside: stomach, nearly empty, contained 

 some grasshoppers. 



^iotnach No. //.>.— Adult female; ti'ai)])ed September 5, 1914, 

 at P^jrt Collins, at edge of alfalfa field: stomach, nearly empty, 

 contained some grasshoppers. 



Stomach No. J/G. — Adult female; traj)})ed Se{)lember 5, 1914, 

 at Fort Collins, in pasture of native grass: stomach full of grass- 

 hoppers. 



SUGGESTIONS FOR CONTROL 



When ground squirrels are abundant and destructive to crops, 

 the methods of control are j)oisoning, fumigation, and trapping. 

 Probably the cheapest and one of the most effective means of 

 exterminating ground squirrels is by the use of poisoned grains. 



Poisoning 



The following formula has been perfected and used by the 

 writer successfully for this rodent : 



Whole corn 16 quarts 



Strychnine (alkaloid powdered) 1 ounce 



Saccharine 1 teaspoonful 



Flour % pint 



Salt 1 pint 



Water 1 quart 



Directions for Mixing. — Dissolve the saccharine and strych- 

 nine in the amount of water called for in the formula, add the 

 flour and salt, mix thoroughly with an egg-beater, put over fire, 

 and heat until the flour begins to thicken, stirring constantly. 



Pour the poisoned solution over the grain, thoroughly mix 

 until each grain is evenly coated, spread, and dry. 



Follow the directions carefully. The success of the use of 

 this formula depends upon the careful preparation of the poisoned 

 solution and the thorough coating of the grain. 



Three or four kernels are sufficient for each burrow, and 

 experiments made in the laboratory show that one or two kernels 

 of corn treated with this formula will kill a squirrel. 



Fumigation 



Carbon bisulfid can be used successfully for this squirrel. 

 Directions for the use of this gas are as follows : 



Take cotton waste, roil in a small ball, pour on a tablespoon- 

 ful of crude bisulfid, throw it as far as j)ossible down the burrow, 

 quickly close the hole with earth, and tamp with the foot so as to 

 prevent the escape of the gas. 



