INDEX 



:iO.") 



of, 24 ; food of, 24, 25, 30, 34, 42 ; 

 food chart, 33 ; methods of bird 

 study and special problems, 35- 

 53 ; migration, 20, 30, 31 ; niunbcr 

 needed, 28 ; orders of, 22, 37-53 ; 

 outdoor laboratory ^vork, 2531 : 

 plan of course, 23 ; topics for study, 

 31,32; topography of, 37; Nvintcr 

 feeding of, 31 ; work suggested, 31 



Bison, 169, 171 



Bitter rot, 210, 212, 213 



Bittersweet, 7f> 



Bivalves, 274 



Black basses, 30'.» 



IJlack carpet beetle, 154 



I'.lack cherry, 59, 75 



Black deatli, 175, 177, 238 



Black flies, 113 



Black gum, 50 



Black knot, 207 



Black mustard, 70 



Black nightshade, 76 



Black rot of cabbage, 212 



Black snakes, 326 



Black walnut, 50, 60. 82, 88 ; i-irtun-s 

 of, 61, 66 



Black-and-white warbler, 50 



Blackberry, 04 



Black-billed cuckoo, 46 



Blackbirds, 34, 48 



Blackleg, 248 



Blight, on bean, 215; tire blight, 212 : 

 on pear and apple, 212. 218; on 

 potato, 210, 215 



Blister, or oil, beetle, 15r. 



Blood, good and bad, 344 



Blood-sucking conenose, 164 



Blowfly, 154, 318 



Blowing adder, 32(5 



Blowing viper, 327 



Blue crabs, 287. 202 



Blue jay, 48 

 Blueback salmon. 809 



Bluebird, 4'.», 51 



Bluebottle, 112, 154 



Bluegill, 290, 306, 307, 8t)'.' 



Blue-tailed lizard, :^25 



Bobolink, 48 



Bobwhite, 34, 11. »-'. 5:;. MVJ 



Body lou.se, 154 



Boils, 233, 234, 286, 248 



Bollworm, 156 



Bordeaux mixture, 209, 217 



Borer beetle, 155 



Botflies, 113, 157 



Bovine malaria. 257 



Bovine tuberculosis. 1 jo. 228 



Box tortoise, 324, 825 



Bright's disease, 232 



Broad-leaf laurel, 75 



Bronchitis, 234, 235 



Bronzed grackle, 48 



Brook trout, 309 



Br< >oks*s law, 291, 292, 308 ; applied to 

 food and game fi.shes, 308 ; apj^lied 

 to the lobster problem, 28(5, 291, 292 



Brown creeper, 51 



Brown rot, 207, 2lo. 211 



Brown thrasher, 51 



Brown-tail moth. 20. 156. 160-162 



Bubonic plague, 2. 107. 175-177. 215. 

 234, 248 



Bugbane, 76 



Bull thistle, 71 



Bullfrogs. 318, 815, 81«;. 817. 819 



Burdock, 71, 72 



Burrowing roots! ocks. 71 



Butter i-laiii. 278 



Butterflies. liVJ; rabbage, 21. 18«5-140 



Butterimt, 59 



Cabbage, 94, 98; black rot of, 212 

 Cabbage butterfly, 21, 186-140; con- 

 trol. 138-140; disi.ers;\I. 137; fe- 

 cundity, 186; life history. 186 187: 

 natural i-neniies. 1."J<1 



