Von dem Bome-apparatus , for hatching small eggs 112 



Waffle scraps ••.... 138 



Wamblood flesh 123, 13^, UO 



Waste cakes 138 



Wastes, animal 133 



Wastes of oil manufacture 138 



Water ^6 



Water, acidulous 196 



Water amount (see water requirement) 



Water analysis 48 



Water asellus (Asellus aquaticus) 32, 34 



Water beetles 35 



Water bloom (blue green algae) /k4, 154 



Water bugs 33, 34, 35, 36 



Water bugs (Naucoridae ) 34 



Water carrying capacity of pipes 67, 68 



Water content of the nutrition 24, 25 



Water coverage, and duration of coverage 35, 36, 60, 61, 130, 184, 191 



Water cress (Nasturtium officinale) • 43, 44., 152 



Water depth 47 



Water fleas 11, 35, 36, 85 



Water for the hatchery 114 



Water gladiole (Butomus ) 42 



Water-gladiole ( Butomus umbellatus ) 42 



Water insects 192 



Water knot-grass ( Polygonum amphibium) 43 



Water milfoil (llyriophyllum) 43 



Water mint 152 



Water mold (Saprolegnia and Achlya) 200 



Water, moor and heath 163 



Water moss ( Fontlnalis species ) *.... 44 



Water moths (Lopidoptera) 36 



Water movement 47 



Water-ouzel , 193 



Water pest (Elodea) 43 



Water plants as fertilisers 171 



Yfater rauiunculus (Hanunculus aquatilis) ,i,,,, 43 



Water-rat 192 



Water, reaction of the 51 



Y/ater, regional variation of 48 



Water requirement of brooding boxes 121, 122 



Water requirement of carp ponds 62 



Water requirement of hibernation ponds 182, 183 



Water requirement of mast ponds 124 



Water requirement of under-and long-stream apparatus Ill 



Water scorpion 34 



Water-shrew y 193 



Water, sour 196 



Water speed-well (Veronica) t 152 



Water-spider 192 



Water, spring 152 



Vi'ater striders 34 



Water supply, initial 63 



Water supply of ponds 62 



Water v/heels 152 



Yiiater wheels , source of supply for 152 



Weed removal 152 



Weed-saw^ Ziemsen' s 156 



"Weeds" ( submerged plants ) 42 



Weight-length curve 10* 



Weight, normal 10 



Yfeight, ratio to length 9, 10» 



259 



