INDEX 



203 



Sporangia, 171 

 Spores in yeast, 161 



in unicellular plants, 1G5 

 Sporophyte, 171, 172 

 Springtails, 127 

 Squirrel, 81 



flying, 81 

 Squirting cucumber, dispersal of 



seeds bj^ 121 

 Starch, 31 



insoluble in water, 90 

 Starch-grains, concentric rings in, 



138 

 Starfish, 67 



movement of, 125, 126 



habitat of, 178 

 Statoblasts of Polyzoa, 165 

 Stickleback's nest, 177 

 Stigma, 174 

 Stigmata (or Spiracles) in insects, 



104, 105 

 Slomata, 32, 53, 55 



number of, 54 

 Strawberry, runners of, 163 

 Sugar, 12,^29, 31, 33, 38 



cane, 33, 164 



grape, 33 

 SuljDhur, in protein, 7 

 Sundew, movement of, 119 

 Sunflower, section of stem, 50 

 Sunlight, effect of on hfe in sea, 



145-53 

 Swallows, migration of, 129 

 Swan, speed of flight of, 130 

 Swift, flight of, 129, 131 

 Syllis ramosa, 165 



XADrOLE, food of, 69 



development of, 180 

 Tapeworms, 24, 46, 77, 113, 169, 



185 

 Tapir, food of, 77, 79 

 Telegraph plant, 117 



rotatory leaves of, 136 

 Temperature, of plants, 101 



normal of human body, 109 



of birds, 109 



of cold-blooded animals, 110 



of sea, 150-3 



of soil, 153-4 

 Tendrils, 118 



Tenehrio, 64 



Termites f white ants), 62-3 



specialized functions of, 154 

 Ternary compounds, 21 

 Tetanus (lock-jaw), 113 

 Thorny-headed roundworms. 21 

 Thrush, food of, 72 

 Thyme, 187 

 ThjTOxin, 92 



Tides, intluencc on marine creatun-s 

 of, 144 



rhythm of, 149 

 Tinea moth, 63 

 Tissues, defined, 13 



action of, 110 

 Toads, food of, 68 

 Tobacco plant, seeds of, 175 

 Tortoises, food of, 69 



movement of, 127 



rhythmic action of heart, 137 

 Toririz viridana, destroys oak leaves, 



65 

 Tracheae, 104, 105 



bladders in, 105 

 Tracheids, 49, 50, 55 

 Trematoda (flukes), 87 



larvae, movement of, 123 

 Trench fever, 63 

 Tropic movements, 119 



geotropic, 119 



heliotropic, 119 

 Tropics, slight seasonal changes in, 



147 

 Tubers, 56 

 Turacin, 36 

 Turbellaria, 87, 123 



amoeboid cells in, 121 



gliding movement of, 123 



fertilization of, 182 



monoecious, 185, 186 

 Turbot, number of eggs, 17(5 

 Turgidity of cells, 56, 117, 12(i, 



121 

 Turtles, snapper, 69 



green, 69 



logger-headed, 69 



leathery, (59 



mode of swimming, 127 



habitat of, ISO 

 TwiniiiL' stems, IIS 

 Typhoid fever. 63 

 Typhus fever, 63 



