INDEX. 505 



Page. 



Bisbee, Arizona I ;■;. ] 7 



collections made at 99 



Blanco, Don Jacobo, International Boundary Commissioner I 



Boca 1 rrande Mountains 30 



Boreal Region To. 71. 72 



Boundary Monuments, concordance of mini tiers <>i g 



Bovidae 233 



Boxelder 63 



Brandegee, Professor Z. S., botanist 5 



Brayodendron texanum 67 



Brazos River 9 



Broad-tailed beaver 350 



Brush-mouse, Apache 1 p; 



A 1 1 water H> :; 



bare-footed 422 



( 'alifnrnia 41: J , 



Buckeye. Mexican 63 



Texas 63 



Buckthorn, cascara 64 



evergreen 64 



Bumelia rigida •. 67 



Burro 208. 210 



( !abota Mountains, Sonora 114 



Cacalote 174 



( iactus, candelabrum 65 



giant 64 



Schotl 66 



Thurber 66 



tree 66 



Cajon Bonito Creek. Sonora 11, L3, L5, L6, 29,96 



fauna and flora at 93 



< 'alifnrnia brush-mouse 63 



ground-squirrel 324 



juniper 42 



meadow-mouse 498 



mule deer 21 1 



Subtropical Tract :::. 7 1 



sycamore * 56 



vole 198 



Callospermophilus 309 



bernardinus 313 



chrysodeirus 312,313 



lateralis 287, 293, 309, 312 



Camel Skeleton ' 120 



('a in els, Arabian, in the southwesl L69 



Camelus dromedarius L69 



< iampbell's Ranch. ( 'alifnrnia 22. L35 



Gamp Lowell, Arizona 17, 1 in 



Campo, California. 22. 135 



Canadian Life Zone 39, 49, 71 



Canyon-squirrel 315 



Carrizalillo Mountains, New Mexico 10,30 



descripl ion of 83 



Springs. \ew Mexico 10 



