20 



EVERYDAY SCIENCE 



References are to pages 



Saturn (a planet) .... 11-14 



day on 12 



distance from earth and sun 11 



moons of 11 



rings of 13-14 



surface of 11 



Scents (of flowers) 390 



Science, earth (development of) 



8-9, 20-21 



Sea .... 160,213,249-251 



beaches 251 



caves 160 



distance from, a factor in heat 213 

 interchange with land . . 249-251 



Seasons 27-31,40 



causes of 27-31 



equinoxes, autumnal and 



vernal 31 



solstices, summer and winter 30 



Seaweeds .... 162,531-532 



sargassum 532 



sargasso seas 162 



Seeds (of plants) . . . 388-389, 

 392-396, 422 



cotyledons 394, 422 



development of 395 



dispersal of 392-393 



embryo 388-389, 394 



energy of 396 



germination of .... 393-394 



Seepage (in irrigation) . . . 326 



Senses 413-418,423 



nerve-connection with brain . 413 



of hearing 416-418 



of sight 414 



of smell 413 



of taste 413 



pf touch 413 



Sewage (disposal of) . . . 449-450 

 see also Health and sanitation 



Shellfish (invertebrates) ... 400 



Shells (of low-life animals) . . 401 

 chalk cliffs of England . . 401 



" Shooting-stars ; " see Meteors 



Shore .... 243-244,256-259, 

 540-541, 549 



continental shelf . . . 256-259 

 bars, dunes, islands, 

 lagoons, reefs 256-259, 540-541 



Shore Continued 



depressed coasts 549 



effects upon, of sun . . 243-244 

 Sight (sense of) . . . 414-416, 423 

 Silkworms (productive insects) 403 



Silt 309-310,321,345 



Silver (mineral) 516 



Sirocco (cyclonic storm) . . . 229 

 Skeleton (of man) .... 405-406 



appendages 406 



ribs 406 



skull 406 



spine (vertebral column) . . 406 

 Skin (organ of touch) . . 413, 423 

 Sky (the heavens) .... 1-19 



" Slack water " 164 



Slate (metamorphic rock) . . 255 

 Sleeping sickness, African (pro- 

 tozoan disease) . . . .401,452 



Sleet 104, 234 



Smell (sense of) 413 



Snow . 104, 234 



Soap (emulsifier) . . . .145, 445 



Soils ... 57, 173, 197-198, 209, 



212-213, 284-286, 293-300, 



307-346, 401-403, 534 



agricultural . . . 313-341,345 



building-materials dependent 



upon 307 



classes of . 284-285,307-310,345 

 clothing dependent upon . . 307 

 composition of . . 308-326, 345 



cold frame 209 



conservation and reclamation 



of .... 322,332-339,345 



cultivation of ... 329, 334, 345 



drainage of ... 313, 323-326 



331-332, 334, 345 



evaporation of soil-water 327-329 

 fertility of . . 173, 308, 313, 315, 

 317-319, 345, 401-402, 535 

 fertilizers .... 315-319,345 

 food dependent upon . . . 307 



forestry vs 339-345 



formation of 285-300, 307-310, 345 



heat vs 212 



insects vs 403 



life (animal and plant) in 



311-319, 345, 401-402, 535 



