406 



INDEX. 



WIN 



Wings of insects, 203 



of birds, 287 



quill-feathers, 288 



wings of the bat, 321 

 Winter, fertilising influence of, 64 

 Wood, characters of the, of different 



trees, 69 



Woodpecker, nest of the, 303 

 Worms, 166 



are they helpless ? 166 



beauty of the free marine annelides, 

 166 



their feet, 167 



ZOS 



Worms continued. 



sedentary or tubicolar worms, 167 



naides, 169 



water-leeches, 169 



land-leeches, 170 



earth-worms, 170 



intestinal worms, 171 



rotifera, 172 



'TOSTEEA marina, or grass-wrack, 

 LJ submarine meadows of, 55 



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