588 



Index 



Snails, terrestrial, 526 



Snails, washing, 530 



Snider, George G., 211 



Sodium chloride, 66 



Soil temperatures, 506 



Solaster, 550 



Solidago, 291 



Solid media, 53, 85 



Solution of egg, 124 



Sonneborn, T. M., 108, 121, 148 



Soy bean meal, 212, 218 



Spaghetti, 109 



Spawning, 182, 185, 188, 519, 535, 543, 



553 

 Spawning, controlled, 393 

 Spawning, natural, 394 

 Spawning season, 551 

 Spencer, G. J., 259, 263 

 Spencer, Herbert, 344 

 Sperm, concentration of, 549 

 Sperm of Ulva, 38 

 Sphaerocerus, 434 

 Sphaerotheca, 461 



Sphagnum, 60, 69, 328, 361, 481, 506 

 Sphecidae, 516 

 Spiraea, 459 

 Spirillina, 94 

 Spirillum, 113, 171 

 Spirochaeta, 65, 67 

 Spirodela, 73 



Spirogyra, 69, 93, 267, 449 

 Spirontocaris, 232 

 Spirostomum, 60 

 Spittle insects, 315 

 Split peas, 60 

 Sponges, 137 

 Sporozoa, 96 

 Sporozoites, 382 

 Sprouting grain, 504 

 Sprouting of potatoes, 323 

 Sprouting seeds, 457 

 Spruce budworm, 488 

 Square scrape net, 6 

 Stab cultures, 53 

 Stable fly, 428 

 Stable tea, 208 

 Stafford, J., 539 

 Stagmomantis, 284 

 Stagnicola, 525 

 Staphylinidae, 453 

 Staphylococcus, 116, 171 

 Starch agar, 53 

 Statoblasts, 179 

 Stenostomum, 148, 149 

 Stentor, 60, 103, 106 

 Stentoridae, 129 

 Stephanurus, 172 

 Sterility, 425 

 Sterilization, 49, 356 



Sterilization of ciliates, 103 



Sterilizer, dry air, 441 



Stichococcus, 122, 220 



Stichostemma, 163 



Sticklebacks, 74, 241 



Stilobezzia, 391 



Stinging of host, 502, 513, 514 



Stirewalt, M. Amelia, 149 



Stirring, 235 



Stock cultures, 75, 498 



Stock nests, 508 



Stoll, Norman R., 434 



Stomach juice, 568 



Stomoxys, 428 



Stone, M. W., 456 



Stonefiy, 273 



Storage cellar, 494 



Storage of ticks, 253 



Strainer for eggs, 418, 420 



Strainer for maggots, 420 



Straus, William L., Jr., 119 



Strauss, M. B., 441 



Strawberry, 494 



Strawberry leaf roller, 493 



Strigoderma, 469 



Strongylocentrotus, 558 



Stuart, C. A., 208 



Stump. A. B., 92 



Stunkard, H. W., 156 



Sturtevant, A. H., 437 



Styela, 565, 567 



Styelidae, 565 



Stylonethes, 132 



Stylonychia, 64 



Stylotella, 137, 139 



Subcultures, 70, 73 



Subterranean termites, 278 



Suction-pump collector, 45 



Sugar, 433, 492, 503, 514 



Sugar bait, 337 



Sugar solution, 456, 492, 497, 510 



Sullivan, W. N., 432 



Summer egg producers, 219 



Supersaturation, 20 



Supplying moisture, 44 



"Sweeping," 318, 334, 435 



Sweetman, Harvey L., 469 



Sweet potatoes, 471 



Swine kidney worm, 172 



Sycotypus, 533 



Sympetrum, 270 



Symphyla, 259 



Symplegma, 560 



Synalpheus, 233 



Syrphidae, 409 



Tabanidae, 405 

 Tabanus, 405, 408 

 Tachinidae, 411 



