xxviii Full-Page and Other Illustrations 



PAGE 



Fig. 164. — Pocket-gopher. Attitudes in burrowing; the same animal in 



different poses 569 



Fig. 165. — Burrow of T. talpoides 57° 



Fig. 166. — Burrow of talpoides, Carberry, Man 573 



Fig. 167. — Typical residential burrow of a Thomomys ..... 574 



Fig. 168. — Prairie sections made at Carberry, Man., to illustrate the num- 

 ber of Gopher burrows near the surface ..... 576 



Fig. 169. — Snow-tunnels of Pocket-gopher 577 



Fig. 170. — Work of monlkola, near Lake Tahoe, California .... 582 



Fig. 171. — Gopher work in Colorado, on a space 24 feet square . . 583 



Fig. 172. — Skull of Zapus hudsonius ........ 587 



Fig. 173. — Quill from back of Porcupine magnified 14 diameters . 615 



Fig. 174. — Feet of Hares, half life-size 626 



Fig. 175. — Tracks of the Snowshoe-rabbit ....... 634 



Fig. 176. — Snowshoe-rabbit — poses from life. ...... 638 



Fig. 177. — Feet of Prairie-hare ......... 659 



Fig. 178. — Life-studies of Prairie-hare, made chiefly in Wyndygoul Park . 662 



Fig. 179. — Tracks of the Prairie-hare ........ 666 



Fig. 180. — Lines to illustrate the actions of Whitetail and Blacktail Jack- 

 rabbits running ......... 667 



Fig. 181. — Prairie-hare with horns, each about 3 inches long . . . 671 



Fig. 182. — Tail-pieces of four species 673 



