INDEX. 



397 



PAGE 



Rachis, midvein and stipe 203 



Raspberries described 239 



Radiolaria described 260 



Raptores, birds of prey 304 



Rain, explanation of :-i34, 338 



Rainfall, exceptional 334 



Rainwater, where does it go ? 339 



Rest and motion defined 18 



Reflection defined 30 



Reflectors, good and poor 30 



Refraction, laws of 76 



Refraction, cause of 77 



Refraction, index of 77 



Reactions and Reagents 119 



Reindeer Moss 197 



Resin ducts 217 



Receptacle defined 224 



Respiratory organs 255 



Reproductive process 250 



Respiration in insects 277 



Reptilia, description of 298 



Recent Geological Period 372 



Reproduction, rapidity of 379 



Relations of life forms 382 



Rectangular system of survey 384 



Rhizoma or rootstock 202 



Rhubarb, uses of 230 



Rhinocerotidse described 308 



Rivers, how formed 342 



Rivers vary how 342 



River valley, parts of 342 



River, carrying power 344 



Rivers, eroding agents 344 



Rivers deposit sediments 346 



Rosin and resins 172 



Roots, uses of 188 



Rose Family described 239 



Rotifera described 266 



Rodentia described 312 



Rocks, composition of 320 



Rocks, disintegration of 324 



Rocks, first formed 349 



Rocks of Silurian Age 353 



Rocky Mountains formed 359 



Rue Family described 236 



Ruminants, stomach of 310 



Salt, composition and definition 119 



Salts, how named 119 



Safety lamp, principle of 133 



Saltpeter, how made 147 



Samara or wing fruit 229, 236 



Sargassum, seaweed 196 



Saxifrage Family 238 



Saprophytes 189, 198 



Saltigradse (spiders) 273 



Satellites or moons 318 



Sandstone rocks 324 



Sand dunes formed 338 



Sand bars in rivers 346 



Sand bars in the sea 347 



Sample descriptions 387 



Science age and growth 9 



Science considers what 10 



Science, opposed by whom 9 



Science attempts what 10 



Scientific work 10 



Scientific meti^d 11 



Science, educational value 12 



Screw described 67 



Scorpions described 



Scales of a fish 



Scansorial or Climbing Birds. 



Schists, structure of 



Sepals and calyx 



Sedge Family described 



Sensitive plant 



Seeds, dispersal of 



PAGE 



.. 274 



303 

 323 

 211 

 223 

 240 

 247 



Sea urchins ........................... 262 



Sense organs, insects ................ 278 



Selachii described ................... 291 



Semnopithecidse, monkeys .......... 314 



Serpentine, composition of ........ 321 



Sediments deposited ................ 346 



Section, size, divisions .............. 386 



Siphon explained .................... 40 



Silicon, properties of ................ 135 



Silica, forms of ........... ^ .......... 135 



Silicates, abundance of ............. 135 



Silver, properties of .................. 159 



Silver nitrate ......................... 160 



Silver chloride and bromide ........ 160 



Silique and silicle (pods) ............ 232 



Siphons of a mussel .................. 287 



Skin of the insect ..................... 267 



Slime moulds ........................ 183 



Snails and slugs ...................... 288 



Snakes described ..................... 299 



Solids described ...................... 25 



Sounds, how caused .................. 52 



Sound, report, noise ................. 52 



Sound, transmission of .............. 55 



Solar spectrum ....................... 83 



Sodium, source of .................... 157 



Sodium compounds .................. 152 



Sodium silicate ...................... 153 



Soap, how made ...................... 179 



Solonacese (potato) .................. 241 



Soricidse or shrews ................... 313 



Soil, composition of. ................. 324 



Soil, how formed .................... 340 



Specific gravity defined .............. 36 



Specific gravity, how found ......... 36 



Specific gravity, uses of .............. 36 



Spectrum of iron 

 Spectrum of stars 

 Space and motion 

 Spirogyra (green scum) 

 Sporocarp described 

 Sporogonium described 

 Sphagnum, Moss 

 Sporangia 



84 

 84 

 43 

 193 

 196 

 200 

 202 

 203, 205 



Spike and spikelet ............... 217, 222 



Spurge Family ........................ 237 



Sperm cell and egg cell .............. 256 



Sponge described. ................... 260 



Spider, study of ..................... 272 



Spiders ballooning .................. 274 



Springs, how formed. . . ............ 340 



Springs, soft and hard water ....... 340 



Springs, mineral, etc ................ 340 



Spring studies ...................... 389 



Study of nature, importance of .... 3 



Steam engine, parts of .............. 69 



Strontium, properties of ............. 157 



Steel, composition of ................ 164 



Steel , how made ...................... 164 



Strawberry, what is it? .............. 239 



Starch, source, use .......... . ........ 175 



Stearin, properties of ................ 178 



Stomato described ................... 186 



