CHAPTER VI. 
THEORY OF DEVELOPMENT ACCORDING TO LYELL 
AND DARWIN. 
Charles Lyell’s Principles of Geology—His Natural History of the Earth’s 
Development.—Origin of the Greatest Effects through the Multiplication 
of the Smallest Canuses.—Unlimited Extent of-Geological Periods.— 
Lyell’s Refutation of Cuvier’s History of Creation.—The Establishment 
of the Uninterrupted Connection of Historical Development by Lyell 
and Darwin.—Biographical Notice of Charles Darwin.—His Scientific 
Works.—His Theory of Coral Reefs.—Development of the Theory of 
Selection.—A Letter of Darwin’s.—The Contemporaneous Appearance 
of Darwin’s and Alfred Wallace’s Theory of Selection—Darwin’s Study 
of Domestic Animals and Cultivated Plants.—Andreas Wagner’s notions 
as to the Special Creation of Cultivated Organisms for the good of 
Man.—The Tree of Knowledge in Paradise-—Comparison between Wild 
and Cultivated Organisms.—Darwin’s Study of Domestic Pigeons.— 
Importance of Pigeon Breeding.—Common Descent of all Races of 
Pigeons. 
Durine the thirty years, from 1830 until 1859, when 
Darwin’s work appeared, the ideas of creation introduced 
by Cuvier remained predominant in the sciences of organic 
nature. People rested satisfied with the unscientific assump- 
tion, that in the course of the earth’s history, a series of 
inexplicable revolutions had ‘periodically annihilated the 
whole world of animals and ‘plants, and that at the end of 
each revolution, and the beginning of a new period, a new, 
