Index 



463 



Sludge-worms, or mud-worms, 329, 



345, 392, 399, 415, 440. 441, 443, 



444, 446, 447, 448, 454, 455. 



Snails, 329, 333, 334, 336, 337, 341, 342, 



343, 344, 347, 350-353, 356, 357, 



358, 359, 360, 362, 363, 364, 367, 



368, 369, 370, 371, 372, 374-375. 



376, 380-381, 383, 391, 392, 394, 



395, 396, 397, 398, 399, 401, 403, 



405, 406. 410. 415, 416, 430, 431. 



Snapdragon rust, 259, 278, 325. 



Softwoods (conifers), 97, 98, 99, 100, 



103, 105. 

 Somatogyrus subglobosus, 364, 381, 



418, 419, 421. 

 Sorrel, Wood, 196. 



Sphaeriidae, 327, 333, 334. 336, 337, 

 350, 351, 362, 363, 368, 391, 394. 

 395, 399, 401, 403, 405, 415, 419. 

 Sphaerium (lacustrine), 544, 546. 

 simile, 419. 



spp., 363, 375, 403, 405, 415. 

 stamineum, 364, 374, 404, 415, 419. 

 striatinum, 404. 415, 419. 

 lilycashense, 364, 415. 

 Sphaeronema fimbriatum, 243. 

 Sphaerotheca humuli, 235. 

 mors-uvae, 236. 

 pannosa, 256. 

 Sphaerotilus, 416. 



nutans, 455. 

 Sponges, 367, 569, 375, 376, 394, 395, 



401, 403. 416, 419, 420. 

 Sporotrichum globuliferum, 15. 

 Stenelmis sp., 421, 422, 445, 449, 450. 



451, 453, 4u8. 

 Stonecat. 543. 



Stratiomyia chamaeleon, 441. 

 Strawberry, 237. 



diseases, 237-238, 278. 315. 

 distribution of acreage, 314. 

 Strophitus edentulus, 385. 421. 

 Sucker, Common. 434, 543. 



Spotted, 434. 

 Suckers, 543. 

 Sunfish, 448, 449. 

 Green, 434. 



Sunfishes, 430, 432. 



lacustrine, 542. 

 Sweet Potato, 243. See under Potato. 

 Swiss Chard and Beet, disease of, 250, 



278, 320. 

 Sycamore, 72, 74, 92, 116, 131, 143. 

 Sympetrum sp., 453, 456. 

 Sympliynota complanata, 384, 385. 

 Sympiesis sp., 16. 

 Syrphidae, 458. 

 Syrphus-fly larvae, 440. 



Tabanidae, 445, 451, 452. 

 Tabanus sp., 421, 445, 452. 

 Tadpoles, 448. 

 Tamarack, 111, 117. 

 Tanypinae, 415. 

 Tanypus dyari. 349, 458. 



monilis, 349, 373, 422, 441, 458. 



spp., 349, 362, 415, 443. 

 Tanytarsus sp., 451. 

 Terrapin, 430. 

 Thalictrum, 177. 



dioicum, 177. 

 Tilletia laevis, 181. 

 Timothy diseases, 205. 278, 296. 

 Tipulidae, 452, 453, 459. 

 Tomato, 241. 



diseases, 241-243, 278, 316, 317. 

 Trepobates pictus, 443, 445, 449, 450. 



451, 457. 

 Trichoptera, 405, 417, 420, 441, 442, 

 443, 449, 450, 452, 455, 457. 



larvae and pupae, 459. 

 Trichotanypus bifurcatus, 459. 

 Triglopsis thompsoni, 547. 

 Tritigonia tuberculata, 385. 

 Tropisternus glaber, 445. 448, 449, 452, 

 454, 455. 



lateralis, 445, 455. 



sp., 421, 441, 446, 457. 

 Trout, 543. 

 Tube-worms, 344. See also Tubiflci 



dae. 

 Tubifex, 334, 344. 345. 399. 415. 



sp.. 344, 414. 446. 



