INDEX 



AETIOLOGY, X 



Alimentary canal, 26 

 Alternation of generations, 56 

 Amitotic, 21 

 Amoeba, 18, 24, 26, 43 

 Amoeboid cells, 30 

 Amorphous layer, 25 

 Amphimixis, 55 

 Archenteron, 60 

 Atavism, 81 

 Atrophy, 86 



BACTERIA, 41 



von Baer, 59, 63 



Barnacles, 42 



Bastian, 13 



Belief as to Origin of Life, 12 



Biogenetic Law, 63 



Biology, defined, ix 



Blastula, 60 



Botany, ix 



Brain, 32 



Burke, 13 



CARBON-DIOXIDE, 47, 51 



Care of offspring, 70 



Cell, denned, 17 



Cellulose, 20 



Cell-wall, 19, 20 



Centrosome, 20, 22 



Chemical composition of living matter, 



14 



Chemotropism, 34, 40 

 Chlorophyllin, 52 

 Chloroplasts, 51 

 Chromatin, 19, 22 

 Chromatin- reduction, 58 

 Chromosome, 22 

 Ciliary movement, 43 

 Conjugation, 55 



Continuity of the germ-plasm, 83 

 Corpuscles, 30 

 Cross-fertilisation, 57 

 Cunningham, 70 

 Cuticle, 20 

 Cyclical changes, 15 

 Cyst, 20 

 Cytoplasm, 17 



91 



DEATH, 15 

 Diastase, 50 

 Diatoms, 41 

 Digestion, 49 

 Disintegration, 14 

 Dispersal of seeds, 71 

 Disposition of skeleton, 4i 

 Distribution of work, 25 

 Dormant life, 16, 77 



ECTODERM, 60 

 Embryology, 58 

 Endoderm, 61 

 Enzyme, 27, 50 

 Epiblast, 60 

 Excretion, 30, 31 

 Extinct forms, 78 



FLAGELLAR movement, 48 

 Formaldehyde, 53 

 Formation of body, 25 

 Fossil record, 79 

 Fructose, 49 



GALVANOTROPISM, 41 

 Gastreea, 62 

 Gastrula, 60 

 Geneology, x 

 Geotropism, 37, 88 

 Germ-layer theory, 64 

 Gills, 30 

 Glucose, 49 

 Granules, 17, 18 

 Growth by budding, 55 

 Growth by fission, 65 



HAECKEL, 62 

 Heart, 30 

 Heat-units, 47 

 Heliotropism, 34, 33 

 Hermaphrodite, 57 

 Huxley, Criteria of Life, 14 

 Hybridisation, 40 

 Hydra, 25 

 Hydrolysis, 50 

 Hydrotropism, 40 

 Hypoblast, 60 



