INDEX 



377 



Sapsucker, 46 



Sawflies, 153 



Sayornis phoebe, 47 



Scab, on apple, 212 ; on potato, 210 



Scale insects, 153, 156 



Scallops, 273, 274, 277 



Scarlet fever, 177, 232, 233, 236, 239, 

 243, 245, 246, 247, 251, 256 



Scarlet tanager, 25, 49 



Schick reaction, 251 



Scientific organizations, journals of, 

 352, 353, 354 



Scorpion, 163, 164 



Screech owl, 45 



Screens, cost of, 20 



Screw-worm fly, 113, 157 



Scrub pine, 59 



Scurvy scale, 156 



Sea mussels, 271, 272, 273, 275; pic- 

 ture of beds of, 270 



Seed, 188 



Selection and survival of the fittest, 

 330 



Seneca snakeroot, 73 



Septicaemia, 234 



Serum, 248; antitoxic sera for 

 snake poisons (antivenins), 329 ; 

 Flexner's antimeningitis, 111 ; re- 

 sistance of, 249 



Shad, 296, 309, 310, 311 



Shagbark hickory, 82 



Sharp-shinned hawk, 45 



Sheep, 257, 263 ; itch mite of, 160 ; 

 liver fluke in, 261 



Sheep botfly, 157 



Sheep laurel, 75 



Sheep-scab mite, 163, 166 



Shepherd 1 s-purse, 70, 71 



Shetland ponies, 333 



Shore bird, 40 



Short-leaf pine, 59 



Shrikes, 30, 34, 50 



Shrubs, 84, 86 



Silicon, 98 



Silver fox, 172 



Sirens, 313, 314 



Sistruiiis, 327 



Skink, 325 



Skunk, 169, 256 



Sleeping sickness, 236 



Slug, currant, 157; pear, 157 ; rose, 

 157 



Slugs, 282, 283, 315 ; eaten by box 

 tortoise, 325 



Small laurel, 75 



Smallpox, 107, 211, 233, 236, 237, 

 247, 251, 256 ; control of, by vacci- 

 nation, 258, 259 



Smartweed, 70 



Smuts, 186, 207, 210 ; on corn, 213, 

 216 ; on oats, 212 



Snails, 274, 283 



Snake venom, treatment of, 329 . 



Snakes, 40, 321, 323 ; number of 

 species of, 326 ; poisonous, 110, 



. 327-328 



Snakeweed, 75 



Snapping terrapin, 324 



Sneezeweed, 76 



Snowball, 97 



Snow-on-the-mountain, 76 



Society for the Protection of Native 

 Plants, 67 



Sodium, 98 



Sodium chloride, 249 



Sodium hypochlorite, 249 



Soft, or long-necked, clam, 276, 278 



Soft-shelled terrapin, 325 



Soil, effects of washing on, 57 ; ele- 

 ments in, 99 ; fertility of, 91, 98,; 

 loss of fertility of, 55, 102 



Song birds killed by rats, 174 



Song sparrow, 49 



Sonoran coral snake, 328 



Sorghum, 197 



Sour wood, 59 



