INDEX 271 



Polypes, in, 112, 117, 118 



Privet Hawk Moth, Eggs of, 149, 150 



Proboscis of Blow-fly, 238-241 



Butterfly, 145, 146, 242, 243 



Hover-fly, 241, 242 

 Protococcus viridis, 32, 33, 34, 56 



RED SNOW, 34 



Rhinoceros, Parasite of, 158 



Rot, Sheep, 167-168 



Rotton-stone, 12, 13 



Rushes, Structure of stems, 52, 53 



SAWFLY, Eggs of, 205 



Saws of, 204, 205 

 Scales of ferns, 39 



of fishes, 247-251 



of moths and butterflies, 244, 245 

 Sea-weeds, 108, 121-131 



Difference between zoophytes and, 121-123 



Stony and coralline, 126-131 

 Sheep-tick, 171, 173 

 Slug, Palate of, 237, 238 



Parasite of, 157 



Small Emerald Moth, Eggs of, 152 

 Small Copper Butterfly, Eggs of, 154 

 Snails, Classification of, by palates, 236 



Mouth and teeth of, 234-237 

 Sole, Skin and scales of, 248 

 Spider, 205 



Mouth of, 193 

 Spirogyra, 25, 26 

 Stag-beetle, Tongue of, 243 

 Stamens of flowers, 86, 88, 89 

 Stickleback, Parasite of, 177 

 Stomata of leaves, 79, 80 

 Stonecrops, 68 



Sunflower, Structure of leaf, 64 

 Sycamore, Stem structure of, 42, 43 



