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Textes en anglaisLyell, Charles, Principles of Geology (extract of Vol. 2) • CONTENTS. VOL. II.
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CONTENTS. VOL. II.
CHAPTER I : PAGE 1

Changes of the Organic World now in progress - Division of the Subject - 
Examination of the question, Whether Species have a real existence in Nature ? - 
Importance of this question in Geology - Sketch of Lamarck's arguments in favour 
of the Transmutation of Species, and his conjectures respecting the Origin of 
existing Animals and Plants - His Theory of the transformation of the Orang 
Outang into the Human Species
 

CHAPTER II : PAGE 18

Recapitulation of the arguments in favour of the theory of transmutation of 
species - Their insufficiency - The difficulty of discriminating species mainly 
attributable to a defective knowledge of their history - Some mere varieties 
possibly more distinct than certain individuals of distinct species - 
Variability in a species consistent with a belief that the limits of deviation 
are fixed - No facts of transmutation authenticated - Varieties of the Dog - The 
Dog and Wolf distinct species - Mummies of various animals from Egypt identical 
in character with living individuals - Seeds and plants from the Egyptian tombs 
- Modifications produced in plants by agriculture and gardening
 

CHAPTER III : PAGE 36

Variability of a species compared to that of an individual - Species which are 
susceptible of modification may be altered greatly in a short time, and in a few 
generations ; after which they remain stationary - The animals now subject to 
man had originally an aptitude to domesticity - Acquired peculiarities which 
become hereditary have a close connexion with the habits or instincts of the 
species in a wild state - Some qualities in certain animals have been conferred 
with a view of their relation to man - Wild elephant domesticated in a few 
years, but its faculties incapable of further development
 

CHAPTER IV : PAGE 49

Consideration of the question whether species have a real existence in nature, 
continued - Phenomena of hybrids - Hunter's opinions as to mule animals - Mules 
not strictly intermediate between the parent species – Hybrid 
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Auteur et directeur de publication : Pietro CORSI, pietro.corsi@history.ox.ac.uk
Hébergement : Centre de Calcul de l'IN2P3-CNRS.