INDEX 267 



Diatoms, Movements of, 14, 15 



Grouping of, for use with microscope, 22, 25 

 Dicotyledons, 41-44, 72 

 Dog, Parasites of, 157 



-fish, Scales of, 247, 248 

 Dragon-flies as horse-stingers, &c., 228, 229 

 Food of, 231-233 

 Larvse of, 229 

 Wings of, 229-231 

 Dragon-fly eating butterfly, 232 



Mask of larva of, 229 

 Draparnaldia^ 28 



EEL, Skin and scales of, 249, 250 

 Elephant, Hairs of African, 262 



Parasite of, 158 

 Emu, Feather of, 255 

 Evening Primrose, Stigma and pollen of, 99 



FEATHERS, Birds', 251-256 



Structure of, 251-253 



Varieties in, and why they vary, 254, 256 

 Fibro-vascular bundles, 41, 44, 45 

 Fishes, Parasites of, 177, 180 



Skins and scales of, 247-251 

 Flies, Spontaneous generation of, 132 

 Fly, Blow-, 133, 194, 238-241 



Common House, Eggs of, 133-135 



Gad-, 184-189 

 Flowers, cross-fertilisation of, 84, 87, 91 



Fertilisation of, 98, 99 



Functions of, coloured parts of, 86 



Pollen of, 86, 89, 90, 91 



Sex in, 84, 85 



Fowl, Eggs of parasite of, 141 

 Fox-glove, Fertilisation of, 89, 90, 91 

 Frog, Parasites of, 157 



GAD-FLY, 184-189 



attacking man, 188, 189 



