Index 



437 



PAGE 



tentacles 176 



terns 342 



Tetmemorus 119 



Tetrapedia , 130, 299 



Tetraspora 129, 131 



thallus 153 



thermocline 37, 39, 72, 309, 311 



thoracic appendages . . . . 183, 188, 189 



Thysanura 195 



Tipulidae 297 



Tipula 360 



tides 73 



toads 236, 237 



Ta-niopteryx 279 



topography 74 



trachea 275 



tracheae 270, 278, 279 



Trachelomonas 103, 108 



tracheoles 278, 279 



transpiration 3-1 ^ 



Trembly 16 



Trisenodes 215, 218, 280, 337 



Triarthia 299, 300 



Tribonema 124, 126 



Trichobacteria 141. H^ 



Trichodesmium loi 



Trichoptera i95i 214 



trochophores 250 



Trochosphaera 178 



trout 163, 176,313, 385, 393. 394 



trumpets, respiratory 277, 280 



tubercles 256 



tube-dwellers 37° 



tubes 121, 226, 240, 278, 372 



tubers 272,380,382 



Tubifex 173- 174, 254. 340 



turtles 175, 238. 343, 39° 



tusks, mandibular 255, 256 



Typhaceae ^56 



Typha 91. 321, 334, 346 



Ulothrix 124, 336 



Unio 181,323, 324 



Urodela 236 



Uroglena ^ ■ ^95 



Utricularia 1 17, 155, 284, 285 



Vacuoles 3io 



VaUisneria i53> 240 



valves 109,252,273,288 



vapor . . ., 55 



vaporization + 



Vaucheria ~ 



PAGE 



vegetable forage 399 



vegetative propagation 272 



ventral suckers 367 



vertebrates 239, 374, 382 



Volvox . . . loi , 104, 105, 245, 282, 337 

 Vorticella 161, 295, 299 



Ward, H. B 28, 312 



waste wet lands 401 , 402, 407 



water-boatman 201, 211, 276 



water-birds 239, 240 



water-bloom 14, 15, lOl, 104, 106, 

 129, 132, 133, 161, 295, 

 296, 299 



water-borne diseases 21 



water-bugs 195,210,276,318 



water-content 26 



water-cress I45 



water crops 392, 403 



water crowfoot 156, 319, 344 



water culture 377, 378, 379, 39' , 400 

 401, 402, 403, 404, 406, 

 409 



waterfalls 64,80,81, 117,358 



water-fern 134, I45, 149, 334 



water-fleas ig* 185, 186, 246, 247, 248, 

 249, 266, 267, 269, 285, 306, 

 327,328,387,390,391,392 



waterfowl 91, 239, 380, 409 



water-garden- 378,404, 407, 409 



water-glass 409 



water hemlock 345 



water hornwort 3^9 



water-lily 154, 334, 382, 404 



water-meadows 153, 406 



water milfoil 154, '55, 3i9 



water-mites 193, '94, 3°? 



water mold 140, 143, 144 



water mosses 146, 148 



water-net 122, 123 



water-penny 224, 260, 368 



water-plantain 324, 345 



water plants 100 



water power 403 



water purslane 156 



water reservoirs. . .169, 349, 401, 402 



water-scorpion 212 



water- shamrock ,. 149, 405, 407 



water shield 154, 334, 405 



water-skaters 360 



water snakes 238, 343 



water-striders -^37 



water table 58, 7° 



