210 



INDEX. 



Bain, why forests produce ... 114 

 1 great battles followed by 117 

 Rainfall, diminishing in North 



America ... 114 



flerschell says drain- 

 age lessens the ... 114 

 Rain guage, the nearer the 

 ground the greater the rain- 

 fall indicated ... Ill 

 Reefs, coral, Agassiz on the age 



of Florida ... 159 

 " Darwin's theories 



of ... 150 



how formed ... 151 

 " how a gap was filled 



up ... 151 



Religion, faith essential in ... 130 

 " and atomagnetism ... 196 

 Renaissance, Painting and Archi- 

 tecture ... 60 

 Rogers, Prof., on winds ... 128 

 on coal and pe- 

 troleum ... 140 

 on coal being 



baked ... 140 



on hydrogen in 



coal ... 141 



on the earth's in- 

 ternal fire ... 140 

 Roots, why they spread ... 16 



Ross, Sir John, on the appetite 



of an Esquimaux ... 137 



Ruskin, John, his crusade against 

 Renaissance art ... 60 



s. 



Sand bars, how caused ... 151 



Salt, used in great quantities by 



Africans and Arabs ... 137 

 ' Canadian Indians eat no, 



in winter ... 137 



" criminals fed on food free 



from ... 137 



' action of, in the body ... 138 

 " necessary for digestion ... 192 

 Sable Island, sand bars of ... 151 

 Science, absurdities of ... 78 



looseness in ... 78 



" like a voyage of discov- 

 ery ... 60 

 " convention in Portland, 



U. S., 1873 ... 78 



Scientific use of the Imagination, 



Prof. Tyndall's ... 82 



Schelling on mind ... 37 



Scriptures, The, harmonize with 

 scientific facts ... 199 



Scotch, The, comparatively free 



from indigestion 138 

 " food of the poorer 



classes of ... 138 



Schiaparelli on comets causing 



meteoric showers ... 181 



Sea level, no such thing as a ... 165 

 Seals, transported from salt to 



fresh water ... 31 



Sepoys, flesh eating . . . 137 



Sensational philosophers 78, 81 



Shark, has little or no gills . . . 116 

 Siam, ruined cities of Cambodia 



in ... 115 



Simpson, Sir J. Y., on disease... 187 

 Sky, why is it blue? ... 82 



Prof. Tyn- 

 dall's explanation ... 82 

 Snow flakes, cause of their beau- 

 tiful forms ... 10 

 Solar heat, Prof. Tyndall says, 



is the true origin of glaciers... 109 

 Solent, the ship, a circular storm 



passed over ... 131 



Sound generates heat, says Tyn- 

 dall ... 102 

 " heard better on a winter's 



day than in summer ... 103 

 a property of sympathy... 104 

 Tyndall's new theory of... 105 

 " experiments at South 



Foreland, England,on... 105 

 Sorby, Dr., on water in granite 108 

 " on meteorites ... 180 



Space, temperature of ... 71 



Spectrum of colours, why seen 82 

 Spencer, Herbert, philosophy 



shaken ... 8 



based on a wrong 



foundation. ... 8 



Spiders, mathematical know- 

 ledge of ... 34 

 Spontaneous generation, Black- 

 wood's Magazine on ... 26 

 ' ' the French Academy's 



prize for essay on... 24 

 M. Pasteur on ... 24 



Dr. Child on ... 24 



Germ theory in opposi- 

 tion to ... 24 

 fish produced by ... 27 

 Mr. H. Charlton Bas- 



tian on ... 28 



insects produced by, 



through Mr. Crosse 20 

 atomagnetism the 



cause of 29 



