86 



INDEX. 



Germinal selection, i, 39, 441 So-53, 



59i 63, 66-68. 

 Germinal substance, 55 et seq. 

 Germ-plasm, g, 44, 57. 



Haase, Eric, 70. 



Heliconids, 19, 20, 51 footnote. 



Henslow, G., 70, 8s. 



Heredity, 4 et seq. 



Hertwig, O., 54 footnote, 58, 59. 



Hertz, 5, 6. 



Histcnal selection, 66. 



Huxley, Thomas, 12. 



Hypna, 22. 



Hypotheses, nature of, 5 et seq. 



Ids, their theoretical character, 7. 

 Imagination, its function in science, 



4. 

 ^'Imperfect" formations, 81. 

 Individual variations, 73 et seq. 

 Inertia, law of organic, 15. 

 Internal forces of evolution, 16, 23, 



24, 31, 60, 82-84. 

 Intrabiontic selection, 29. 

 Ishikawa, Professor, 34. 



Japanese cocks, long-tailed, 34, 44, 



78. 

 Kallima, 22, 23, 50, 

 Katagramma, 22. 

 Knowledge, its character, 5. 



Lamarckian principles, 24, 29 et seq., 



31 et seq., 38, 63-64, 68, 84. 

 Leaves, imitated by butterflies, 20 et 



seq. 

 Locomotive, simile of, zx. 



Malthusian principle, 65, 67. 



Markings, butterflies', 16 et seq. 



Maxwell, 4, 5. 



Mean of variation, 78-79. 



Meristic, 18. 



Mimicry, ig, 51 et seq. 



Minot, S., 54 footnote. 



Models, mental, 4 et seq. 



Molecules, 58. 



Morgan, Prof. C. Lloyd, 32, 71, 83. 



Miiller, Fritz, 77-79. 



Miiller, Hermann, 77. 



Mussels, 28. 



Mutations, 31 footnote, 72-;S, 



Nageli, 4, 11, 24, 60, 82. 



Neumayr, 72. 



Newton, s. 



Nutrition of determinants, 36, 37, 41 



47. 

 Nymphalidse, 21. 



Ontogenesis, 8. 

 Orr, Henry B., 69. 

 Osbom, Prof. H. F.; 33. 

 Owen, Richard, 11. 



Paleontology, 31, 73, 75, 76. 



Palms from Cordilleras, 82i 



Pangenes, 40. 



Panmixia, 15, 39, 42, 43-, 64. 



Papilio, 16, 52. 



Parallecta, 23. 



Parts, struggling of the, 29, 39, 66-67. 



Passively functioning parts, 30 et 



seq., 64. 

 Personal selection, 30, 41, 42, 45, 52 



64-66, 80. 

 Phyletic variation, 31-32 footnote. 

 Phylogenesis, 8. 



Phylogenetic variations, 31-32, 73. 

 Plasomes, 40. 

 Plus and minus variations, 35, 42, 46, 



50, 79-80. 

 Polymorphism, 58. 

 Poulton, 64 footnote. 

 Predestined variation, 4. 

 Pre-established harmony, 25. 

 Preformation, 53. 

 Protective colorings, 14 et seq. 

 Protogonius, 22. 

 Pseudocraea, 52. 



Qualitative modifications, 46. 

 Quantitative changes, 46-47. 



Retrogressive development, 38. 

 Round-worms, eggs of, 28. 

 Rouz, Wilhelm, 29, 39, 65, 66. 



Salamis, 22. 



Scott, Prof. W. B., 31 footnote, 72-74. 



Segmentation, 10,. 



