INDEX 267 



Diatoms, Movements of, 14, 15 



Grouping of, for use with microscope, 33, 35 

 Dicotyledons, 41-44, 73 

 Dog, Parasites of, 157 



-fish. Scales of, 347, 248 

 Dragon-flies as horse-stingers, &c., 338, 339 

 Food of, 331-333 

 Larvae of, 339 

 Wings of, 339-331 

 Dragon-fly eating butterfly, 333 



Mask of larva of, 339 

 Draparnaldia, 38 



Eel, Skin and scales of, 349, 350 

 Elephant, Hairs of African, 363 



Parasite of, rsS 

 Emu, Feather of, 255 

 Evening Primrose, Stigma and pollen of, 99 



Feathers, Birds', 25r-356 



Structure of, 251-353 



Varieties in, and why they vary, 354, 356 

 Fibro-vascular bundles, 41, 44, 45 

 Fishes, Parasites of, r77, 180 



Skins and scales of, 347-251 

 Flies, Spontaneous generation of, 133 

 Fly, Blow-, 133, 194, 338-241 



Common House, Eggs of, r33-r35 



Gad-, 184-189 

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



Fertilisation of, 98, 99 



Functions of, coloured parts of, 86 



Pollen of, 86, 8g, 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 



