846 



SCIENTIFIC SIDE-LIGHTS 



1602 

 1003 



3561 



678 



2927 



1579 

 3298 



1226 

 1380 



430 



1866 



1722 



317 



351 



RIVAL, the Humming-bird 

 has no 



RIVALRY Leads to magna- 

 nimity 



r a Strong natural in- 

 stinct 



RIVER, Gorge cut by 



, Heat restored in down- 

 ward flow of 



, Orinoco thought a, of 



Paradise 



, Sun brings, down 



Turned by upheaval of 



RIVERS under ' Arches' ' of 



ice 



Carved mountains into 



shape 



Checked by earth- 

 quake shock 2279 



Clarified by passing 



through lakes *2924 



of Fire Lava 1241 



of Ice *2928 



Lifted by the sun *2927 



of Mud from volcanoes. 2092 



in the Ocean *2926 



Saw mountains asunder 2570 



, Self -purification of 2468 



, Subterranean 929, 950 



in Their wild state *2925 



, Transporting power of.. *2929 



Undermining rocks. ... 2718 



, Union of 3523 



Use rock-debris *2930 



ROAD along Ancient beach . . 1496 



, Royal, to learning 



sought 



ROADWAYS of Ants 



ROAR of Avalanches 



ROASTING-TRAY of Primi- 

 tive man 



ROBBER-BARON of the Air . 



*2931-32 



ROBBERS Plunder victims 



of earthquake 1678 



ROBBERY, Instinct of- 

 Eagle 2932 



ROBIN, Migration of! 2174 



Returns to home 2411 



ROCK, Fluid , of volcanoes. . . . 2762 



, Ice preserved under 



molten 1170 



Marked by waves of 



vanished sea 



, Masses of, ejected from 



volcano 



, Mould of skeleton pre- 

 served in 



. Ocean blockaded by 



floating 



, Plastic current hardens 



to -. 



, Plutonic, a granite. . . . 



, Record graven in 



Split by wedge 



'. a Sure foundation 



, Towers and castles of 



native 



, Waves hardened into.. . 



ROCK-DEBRIS, Earth cov- 

 ered with 



, Ocean floor covered 



with 



ROCK-DUST Filling the air. 

 ROCKS, Abrasion of, by glac- 

 ier 



Bearing imprint of 



raindrops 



, Constant wearing away 



of 



Crumbled by internal 



forces 3671 



Cut by glaciers 3, 2380 



, Depth of, on ocean 



floor *2935 



, Disintegration of 867-68 



, Figures on the 2493 



Floated away by ice. . . 1535 



, Formation of 648 



, Formation of, in the 



present era 1311 



, Frost disintegrates. . . . 801 



852 

 2391 



425 

 2443 



2282 



469 



715 



2674 



*2933 



331 

 3667 



867 



867 

 267 



2-3 

 1607 

 2718 



ROCKS Ground down by 



glaciers 916 



Ground to impalpable 



powder 1301 



, History in the 1499 



Honeycombed by 



water 3705 



, Igneous 374 



, Leaf-tracery in 1864 



, Marine fossils in inland. 3278 



, Microscopic perfection 



in hidden 327 



, Northern, on prairies. . 3686 



, Plants separate 1917 



, Plutonic 374 



Polished as by lapid- 

 ary 2380, 3448 



.Records of ancient 



dead in 2847 



Rounded by waves of 



ancient sea *2934 



, Solid , dissolved . . 282 1 



, the Stratified 373 



, Toads in 2346 



, Volcanic confused with 



sedimentary 1077 



Worn away by ele- 

 ments 3595 



Worn by ice or water. . 821 



Worn down in present 



time 2718 



RODS, Iron, to sound glacier. 2377 

 ROENTGEN RAYS defy re- 

 flection *2936 



-.Foreign substances 



shown by 3030 



Make opaque transpar- 

 ent 3655 



Scarcely affect germs . . 1935 



, Scientific toy gave 3587 



ROLLER of American Abor- 

 igines 1759 



Used in ancient Egypt.. 2695 



Used by primitive man. 2694 



ROMANCE of Science 3007 



of Zoology *2937 



ROMANS, Beauties of Nature 



neglected by 316 



Developed arch 199 



and Pigeon-breeding. .. 1737 



ROME, Dominion of, not a 



matter of chance 2977 



, Philosophers of, con- 

 demn riches 791 



ROOFS, Insects building 



thatched 208 



ROOM, Revelation allows, 



for natural law 2905 



, Student returns to old . 1593 



, Will finds , in variation . 3602 

 ROOT, Growing, divides 



dense earth 2674 



ROOTS Defective in insecti- 

 vorous plants 562 



Making their way in the 



soil *2938 



of Pashiuba 412 



, Plant almost without . . 3637 



Sustain massive crown. 223 



ROPE, Use of, by primitive 



man 3285 



ROSE Seen by light reflected 

 back through its sub- 

 stance 538 



ROSE-BUSH, Ancient, in 



Germany 1915 



ROSTELLUM of Orchid 757 



ROT, Bitter, attacks apples. . . 1009 



Enemy of peach tree . . . 1009 



ROTATION of crops scientific 3138 

 , Day and night vs., of 



earth 879 



, Solar 3188 



ROUTINE, Novelty of youth 



becomes 3793 



ROUTES of Migratory birds . 1677 

 ROWS of Lights on sides of 



deep-sea fish 1249, 1948 



ROYAL INSTITUTION o f 

 Great Britain founded by 



an American 362 



ROYAL SOCIETY, Plain lan- 

 guage required by 2984 



ROYAL SOCIETY in Time of 



Charles II 2984 



ROYALTY among Bees *2939 



RUBBER, Heat shrinks 182 



RUBIDIUM, Discovery of . . . 847 

 RUBIES, Mountain tops shine 



like 699 



RUBY a Product of volcano . 3484 

 RUDIMENTARY ORGANS, 



Plan revealed in *2479, 2612 



. (See also ORGANS.) 



RUIN by Alcoholism is crim- 

 inal insanity 2889 



Left by vanished agent. 107 



RULE, Inheritance the 1676 



, Reversal of general.. . . 2912 



RULER of the Winds 2351 



RULES of Aristotle only for 



deduction. 1638 



RUMINANTS- Classification 



including hog among 



RUN Necessary for flight 



1058 

 2823 



Condor 



RUNNERS, Plants extended 



by. . 2618 



RUNNING,Reflex action in. . 2291 



RUSHES, Seeds of. trans- 

 ported by animals 3039 



RUSSIAN THISTLE, Spread of 3189 



SABLE, 1'ree-frequenting, in 



brown 163 



SACKING of a Tow n Cruelty 705 

 SACRIFICE a Condition of 



the highest good 2497 



of Gem to science *2940 



of the Individual 341 



a Law of Nature 3236 



of Less for greater *2941 



, Love makes, painless. . 1-134 



of Lower organism for 



higher *2942 



for Truth 2050 



SACRIFICES, Human, 



deemed righteous 2830 



to Malevolence *2943 



SAFEGUARD, Knowledge a. 1792 



.Speed a 3177 



SAFENESS of Common sense 



as a guide 582 



SAFETY, Destruction b y 



means used for 794 



, Lowliness is 2557 



, Science increases 1934 



. Yielding, a means of. . . 3794 



SAFETY-LAMP, Miners' 1709 



SAFETY-VALVES, Volcanoes 



Earth's 3671 



SAGACITY, Animal Mule. . *2944 



of Cat 3273 



of Eskim9 dogs *2946 



, Science justifies prac- 

 tical 2903 



Surpasses theory *2947 



- of a Wasp 



*2945 



1173 

 2121 

 1768 



SAHARA, Thirst 



fields as in ............... 



SAIL, the Pull of air on a.. . . 



3ALADO, Irrigation along the 

 SALICYLIC ACID Injurious 



as food preservative ...... 1277 



SALMON, Science measures 



leap of ................. 1121 



SALT a Necessity of life ..... *2948 



--- , U nioii of substances in . 3520 

 SALVATION an Active prin- 



ciple .................. *2949 



SAMARAS or "Keys" of 



maple and ash .......... 



SAMARITAN, The Good .... 



- .Good, in the ant world. 

 SAMPLE, Difficulty of secur- 



ing, of water ............ 



SAND, Cutting power of ..... 



- the Great filter ........ 



- Helps rivers to wear 

 rocks ................ 1049,2930 



-- , Lizard the color of ..... 2183 



-- Preserver of monu- 



ments .................. *2950 



-- in Water exits rocks . . . 1049 



- Wears away rocks ..... 3595 



3742 

 3348 

 1470 



1114 

 1295 

 2390 



