INDEX 



Black-tailed prairie dog. 40, 145 



Blasius 93 



Bounty on sphermophiles • • 33 



on pocket gopher 115 



Boyer river, beaver near i 51 



Bremer county, bounties in 117 



Britt, Hudson Bay jumping mouse at 124 



Broad-winged hawks, enemies to rodents 85 



Brown rat 54, 147 



Broad-winged hawks, enemies' of rodents 85 



Buena Vista county, bounties in 117 



Bull snakes, enemies of rodents 115 



Burlington, northern white-footed mouse at 71 



Butler, A. W 95, 155 



O 



Calhoun county, bounties in 117 



muskrat in • • 101 



Canada porcupine 126, 152 



Canadian beaver 50 



Carbon bisulphide as poison 35, 66 



Carroll, Franklin's sphermophile at 38 



Carroll county, bounties in 117 



muskrat in 101 



Calliope, prairie dog at 44 



Cass county, prairie dog in 44 



woodchuck in 46 



Castor 146 



canadensis canadensis • • 50, 146 



zibetJiicus 96 



Castoridae 50, 142, 145. 



Cats, enemies of rodents 60, 137 



Cedar Rapids, flying squirrel at 18 



gray chipmunk at 29 



Cement, use of, against rats 60 



Cerro Gordo county, bounties in 117 



Chariton, jack rabbit at 132 



Charles City, gray chipmunk at 29 



meadow mouse at 81 



northern white-footed mouse at 71 



red squirrel at 26 



Cherokee, Franklin's spermophile at 38 



Cherokee county, bounties in 118 



Chickasaw county, bounties in 118 



Chipmunk 26, 144 



gray 27 



gray striped 27 



Citellus 143, 144 



Franklini 36, 144 



