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James G. (James George) Needham.

The life of inland waters; an elementary text book of fresh-water biology for students online

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Online LibraryJames G. (James George) NeedhamThe life of inland waters; an elementary text book of fresh-water biology for students → online text (page 26 of 26)
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Unio 181, 323, 324

Urodela 236

Uroglena 295

Utricularia 117, 155, 284, 285

Vacuoles 310

Vallisneria 153, 240

valves 109, 252, 273, 288

vapor 55

vaporization 40

Vaucheria 121



PAGE

vegetable forage 399

vegetative propagation 272

ventral suckers 367

vertebrates 239, 374, 382

Volvpx. . . 101, 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, 101, 104, 106,
129, 132, 133, 161, 295,
296, 299

water-borne diseases 21

water-bugs 195,210,276,318

water-content 26

water-cress 145

water crops 392, 403

water crowfoot 156, 319, 344

water culture 377, 378, 379, 391, 400
401,402,403,404,406,
409

waterfalls 64, 80, 81, 117, 358

water-fern 134, 145, 149, 334

water-fleas 19, 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 319

water-lily 154, 334, 382, 404

water-meadows 153, 406

water milfoil 154, 155, 319

water-mites 193, 194, 301

water mold 140, 143, 144

water mosses 146, 148

water-net 122, 123

water-penny 224, 260, 368

water-plantain 3 2 4 345

water plants 100

water power 403

water purslane 156

water reservoirs. . . 169/349, 4 OI 402

water-scorpion 212

water-shamrock 149, 405, 407

water shield 154, 334, 405

water-skaters 360

water snakes 238, 343

water-striders 237

water table 58, 70



Index



PAGE

water- tiger 280

water-vole 273

water walking-stick 276

water weeds. . .156, 161, 190,232,392

water, buoyancy of 30

" density of .30, 31, 36, 54, 3 H

depth of 29, 307, 321

" for drinking 21

fertility of 56

force of 135

freezing of 31, 80

ground 30, 56

hardness of 51

high and low 74, 96

mineral content of 52, 53

mobility of 30

population of 100

run-off 56, 57, 85, 117

running 39

as a solvent 25, 40

stagnant 130

standing 44

storage of 403

surface tension of 54

thermal conservation of 40, 79
transparency of ... 26, 308, 309

turbidity of 27

underground channels of . 70
viscosity of 30, 54, 244, 248,
249

wastage of 403, 404

waters, alkaline 51

cave 191

" drainage 48

flood 42



PAGE

waters, mineralized ........... 40

polluted .............. 162

public ............. 386, 406

Weismann ................... 301

wells ....................... 191

Wesenberg-Lund ............. 248

whales ................ 19, 274, 275

Whipple, G. C .......... 27, 42, 401

whitefish - - 231, 233, 313, 388, 393

wiers ....................... 169

Will-o'-the wisp ............... 96

willows ..................... 1 58

Wilson, W. M ................ 79

winds ................ 27,33,35, 85

Wolffia ..................... 150

Wolle ....................... in

worms ....... 254, 257, 285, 367, 390

worms, cylindric ............. 172

hair ................. 174

Nematode ............ 172

Nemertine ............ 1 74

oligochete ............. 325

parasitic ............. 1 74

thread ............... 172

true ................. 340

wrigglers ............. 227, 250, 339

Wright, A. H . ............. 236, 237



Zaitha ...................... 211

Zannichellia .................. 153

zooids ................... 1 66, 169

Zostera ..................... 334

Zygnema .................... 119

zygospores ................ 120, 263






FORESTA INSTITUTC

FOR

OCEAN



A\




MOUNTAIN
STUDIES

: .05 FRANKTCWN ROAD
CARSON CITY, NEVADA 8970'





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Online LibraryJames G. (James George) NeedhamThe life of inland waters; an elementary text book of fresh-water biology for students → online text (page 26 of 26)