INDEX — GLOSSARY. 



457 



Sponges, 519- 



canal system of, 521 



digestion in, 454 



reproduction in, 523 

 Spongilla, 519 



Spontaneous generation, 670 

 Spore, 181, 671 

 Sporidia, 749 



Sporophyll, a leaf bearing spores, 282 

 Sporophyte, the generation which pro- 

 duces spores asexually, but is 

 produced sexually, 265 

 Sporozoa, 513, 768, 774 

 Spring hzards, 639 



tails, 577 

 Spurs, 347 

 Squamata, 645 

 Squash bug, 591 

 Squid, 611, 616 

 Squirrels, 652, 660 

 Stapes — stirrup, 399 

 Staphylococcus, 231 

 Starch, 18, 87, 672 



changed to sugar, 90 

 Starfish, 141-143, HS, 552, 553 

 Statocysts, 83, 387-528, 531 

 Statolith, 388, 390 

 Stamen, 123, 124 

 Steapsin, 462 

 Steganopodes, 650 

 Stem, 34, 36 



section of, 10, 12, 13 

 "Stemless" plants, 107 

 Stems of biennials, 107 



of climbers and trailers, 108 



storage, 112 



structure and function of, 72-78 

 Sterculia, 28 



Sterigma — a stalk (of a spore). 

 Stigma (of plants), 125, 127 

 Stigmata (of insects), 478, 574 

 Sting, 590 

 Stirrup, 403 

 Stolon, 109 



Stoma, pi. stomata, 15, 17, 80 

 Stomach of crayfish, 458 



of insect, 579 

 Stomata of aquatics, 188, 189 



function of, 84 

 Stomatopoda, 561 

 Storage stems, no 

 Stork, 650 

 Stormy petrel, 650 

 Streptococcus, 231 

 Streptoneura, 600, 601 

 Striate muscle fibres, 414 



Numbers refer to paragraphs ; Black Fac 



Striges, 650 



Strobila — a chain of segments or indi- 

 viduals formed by transverse 

 division of the parent organ- 

 ism, 124, 755 

 Strobila of microstomum, 124 

 Struggle for existence, 816 

 Struthiomorphae, 650 

 Sturgeons, 633 

 Style,! 25 



Suberized cell walls, 97 

 Subterranean stems, 202 

 Suctoria, 516 



Sugar, CeHioOe, C12H22O11, 90 

 Superior (of the ovary) — attached 



above the calyx. 

 Susceptibility, 774 

 Suspensor, 289, 290, 294, 709 

 Swallows, 650 

 Swamp plants, 192 

 Swarm spore — a ciliated, motile spore. 



conjugation of, 693 

 Sweat glands, 352 

 Swine, 666 

 Symbionts, 216 

 Symbiosis, 745, 746 

 Symmetry, 314 



of echinoderm larvae, 320 



of gastropods, 319 



universal, 317 

 Synergids, 299 

 Syphostoma, 528 

 Syrinx, 647 



Tachyglossus. See anteater. 

 Tadpole of tunicates, 621 

 Taenia — a tapeworm. 

 Tapeworm, 233, 234 755 

 Tapir, 666 

 Taste, 366 



buds, 77, 371 

 Taxonomy, systematic classification of 



organisms. 

 Taxonomic series, 790, 791 

 Teeth, 348 



of mammals, 651 



origin of, 721 

 Tegmen, 42 

 Teleostei, 636 

 Teleutosporcs, 749 

 Temperature and vegetation, 196-203 



control, 840, 841 



sense, 364 



of amoeba, 356 

 Tendons, 429 



origin of, 721 

 e numbers refer to figures. 



