INDEX 



50 



, the, conception of, 49, 



Anatomy, early researches in, 62 

 Astronomy, gravitational, 26-28 

 Atomic theory, 34, 35 



BACTERIOLOGY, 61 

 Bequerel rays, 46 

 Biological science, 7, 8, 61-70 

 author's colour theory of, 



9-12 

 Botany, early researches in, 53, 



54 

 Burning, phenomena of, 35 



CHEMISTRY, 35, 67 



of celestial bodies, 42 

 Colour sensations, 73 



DYNAMICS, early researches in, 

 16, 17, 19 



ELECTRICAL science, develop- 

 ment of, 43 



theory of matter, 49 

 Eugenics. 58 

 Evolution of species, 65 



FARADAY'S researches in electri- 

 city, 43 



GALILEO, on law of velocity of 



fall, 19-27 

 Geology, early researches in, 55 



HEAT, nature of, 36 et aeq. 

 Helium, 42 



KNOWLEDGE, theory of, 85 



LEVER, law of the, 16, 18 

 Light, nature of, 39 et seq. 



sensations of, 73 

 Logic, inductive, 86, 91 



MALARIA, 63 



Malta fever, 65 



Matter, electrical theory of, 49 



nature of, 34 



Mechanical science, 16, 29 

 Medical science, 62, 53, 65, 66 

 Memory, 75, 76 

 Mendelism, 59 

 Microbic diseases, 61 

 Microbiology, 61 

 Molecular theory, 34, 35 



NATURAL Selection, 56 

 Newton, Sir Isaac, 26, 28, 32, 

 33, 34, 36, 39 



PERSE VERATION, 75 

 Physical science, 7-11, 16-50 

 Physiology, 11, 12, 53 

 Psychological science, 9, 10, 12, 

 71-93 



RADIO-ACTIVITY, 47 



Radium, 47 



Rontgen rays, 45, 46, 47 



SCIENCES, the, author's colour 

 scheme of, 9-15 

 divisions of, 7 

 Sense perceptions, 71 

 Statics, 17, 18, 19 



THERMODYNAMICS, 38, 39 



VELOCITY, law of, 19-26, 29 



of light, 33 

 Vitalism, 68, 69 

 Voltaic pile, the, 43 



WAVE theory of light, 40 

 YEAST, fermentation of, 62, 63 

 ZOOLOGY, early researches in, 54 



Printed by BALLANTYNE, HANSON & Co. 

 Edinburgh <Sr> London 



4/12 



