INDEX 





Re/i n in-' $ 



Sugars formed in fermenta- 

 tion 365 



Sulphur, a disinfectant . . . 253 



an elemenl in living things . . 9 



in spraying solul Ion .... 25 



Summary, of amphibians . . 127 



arthropods 93 



bacteria ."..".1 



bean 320 



birds 149 



circulation jus 



con iters 388 



corn 321 



digestion of man l*'j 



disease 258 



ferns and their allies .... 375 



fish 112 



flowering plants 336 



fungi :;•;_' 



hydra-like animals 7<» 



insects 4.1 



mammals 159 



mollusks KL' 



mosses and their allies . . . 368 



nervous system '_':!<> 



of our interest in plants . . . 40i 



protozoa 54 



reptiles 135 



simplest plants 339 



skeleton of man l'.»<> 



spirogyra and pleurococcus . 342 



sponges 62 



starfish group 75 



worm group 84 



Summer residents, examples 



of ill 



Sundew, described 390 



diagram of (rig.) ."-'.'1 



photograph of (tig.) .... 390 



rapid movements of . • . . 392 



sticky substance on leaves . 390 



use of leaves in 294 



Sunflsh, care of eggs by . . . 112 

 example of bony tish (fig.) 104, 106 



Sunflower, " seed " (I'm. ) . . 262 



stem, microphotograpb of i fig.) 286 



Superficial lymphatics of 



arm and hand (tie,.) . ■ . 204 



Supply of oxygen kept up 



by plants I'd 



t<> pagy 



' Surplus food stored in ro> 

 ' Survival of the fitter 

 Swallows, destroj 



insects 



Swallow-tail b>. pol- 



linating Persian til 



from celerj \\ orms 



la rvaa of 



Swamp, breeding place for i 



quitoes (fig.) 



Swarming of bees .... 

 Sweat glands, location of . , 



number of 



work of 



Sweet, a fundamental taste . . 

 Sweet pea. flower of (1 

 Swifts, destroyers of flying bi- 

 sects 



Symbiosis, a dependent relation 



defined 



example of 



Symptoms, medicines in con- 

 ned ion with 



314 



190 

 165 



i « 



361 

 61 



245 



Tachina fly. beneficial Insect 

 Tadpole, development of from 







two stages in (fig.) .... 

 respiration of by gills .... 



Btage of frog 



Tail region of flsh 



Talons, characteristic <»f birds 

 of prey 



Tanning, use of hemlock hark in 



Tap root of bean 



Tapeworm, a common (fig.) 



classified 



Tar. source of 



Tarsus of grasshopper's foot 

 Tartar, effect on gums .... 

 Tassel, staminate flower ol corn 



Taste cells (fig.) 



Technical names of of 



flower 



Teeth, milk (fig.) • • 



ol man 



permanent (fig.) 



Telegraph poles, use of gyTOr 

 oosperms for 



n 

 122 



122 

 106 



in 



78 



<■ 



16 

 167 



166 

 II I 

 167 



•N| 



