438 



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, 314 



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 1 00 



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 



waters, mineralized 



polluted 



public 386, 



Weismann 



wells 



Wesenberg-Lund 



whales 19, 274, 



Whipple, G. C 27, 42, 



whitefish 231,233,313,388, 



wiers 



Will-o'-the wisp 



willows 



Wilson, W. M 



winds 27, 33, 35 



Wolffia 



Wolle 



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



worms, cylindric 



hair 



Nematode 



Xemertine 



oligochete 



parasitic 



thread 



true 



wrigglers 227, 250, 



Wright, A. H 236, 



AGE 

 40 

 l62 

 406 

 30I 

 191 

 248 



275 

 4OI 



393 



169 



96 



158 



79 



85 



150 



in 



390 



172 



174 

 172 



174 

 325 

 174 

 172 



340 

 339 

 237 



Zaitha 211 



Zannichellia 153 



zooids 166, 169 



Zostera 334 



Zygnema t 19 



zygospores 120, 263 







