aan 
NI 
Or 
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CHAPTER VIII. 
TRANSMISSION BY INHERITANCE AND PROPAGATION. 
Universality of Inheritance and Transmission by Insheritance.—Special 
Evidences of the same.—Human Beings with four, six, or seven 
Fingers and Toes.—Porcupine Men.—Transmission of Diseases, espe- 
cially Diseases of the Mind.—Original Sin.—Hereditary Monarchies.— 
Hereditary Aristocracy.—Hereditary Talents and Mental Qualities.— 
Material Causes of Transmission by Inheritance.—Connection between 
Transmission by Inheritance and Propagation.—Spontaneous Genera- 
tion and Propagation.—Non-sexual or Monogonous Propagation.— Propa- 
gation by Self-DivisionMonera and Amoebze.—Propagation by the 
formation of Buds, by the formation of Germ-Buds, by the formation of 
Germ-Cells.—Sexual or Amphigonous Propagation.—Formation of 
Hermaphrodites.— Distinction of Sexes, or Gonochorism.—Virginal 
Breeding, or Parthenogenesis.—Material Transmission of Peculiarities 
of both Parents to the Child by Sexual Propagation.—Difference 
between Transmission by Inheritance’ in Sexual and in Asexual 
Propagation. 
THE reader has, in the last chapter, become acquainted 
with natural selection according to Darwin’s theory, as the 
constructive force of nature which produces the different 
forms of animal and vegetable species. By natural selection 
we understand the interaction which takes place in the 
struggle for life between the transmission by inheritance 
and the mutability of organisms, between two physiological 
functions which are innate in all animals and plants 
