Read Pesky Details: Essays for "Left Brain" Christians Page 4


  Chapter V - Laws of Variation

  Effects of the Increased Use and Disuse of Parts, Controlled by Natural Selection

  Acclimatisation

  Correlated Variation

  Multiple, Rudimentary, and Lowly-organised Structures Are Variable

  A Part Developed in Any Species in an Extraordinary Degree or Manner, in Comparison with the Same Part in Allied Species, Tends to be Highly Variable

  Specific Characters More Variable Than Generic Characters

  Secondary Sexual Characters Variable

  Distinct Species Present Analogous Variations, so that a Variety of One Species often Assumes a Character Proper to an Allied Species, or Reverts to some of the Characters of an Early Progenitor

  Chapter VI - Difficulties of the Theory

  On the Absence or Rarity of Transitional Varieties

  On the Origin and Transitions of Organic Beings with Peculiar Habits and Structure

  Organs of Extreme Perfection and Complication

  Modes of Transition

  Special Difficulties of the Theory of Natural Selection

  Organs of Little Apparent Importance, as Affected by Natural Selection

  Utilitarian Doctrine, How Far True: Beauty, How Acquired

  Chapter VII - Miscellaneous Objections to the Theory of Natural Selection

  Chapter VIII - Instinct

  Inherited Changes of Habit or Instinct in Domesticated Animals

  Special Instincts

  Instincts of the Cuckoo

  Slave-making Instinct

  Cell-making Instinct of the Hive-bee

  Objections to the Theory of Natural Selection as Applied to Instincts: Neuter and Sterile Insects

  Chapter IX - Hybridism

  Degrees of Sterility

  Laws Governing the Sterility of First Crosses and of Hybrids

  Origin and Causes of the Sterility of First Crosses and of Hybrids

  Reciprocal Dimorphism and Trimorphism

  Fertility of Varieties when Crossed, and of their Mongrel Offspring, not Universal

  Hybrids and Mongrels Compared, Independently of their Fertility

  Chapter X - On the Imperfection of the Geological Record

  On the Lapse of Time, as Inferred from the Rate of Deposition and Extent of Denudation

  On the Poorness of Paleontological Collections

  On the Absence of Numerous Intermediate Varieties in Any Single Formation

  On the Sudden Appearance of Whole Groups of Allied Species

  On the Sudden Appearance of Groups of Allied Species in the Lowest Known Fossiliferous Strata

  Chapter XI - On the Geological Succession of Organic Beings

  On Extinction

  On the Forms of Life Changing Almost Simultaneously throughout the World

  On the Affinities of Extinct Species to Each Other, and to Living Forms

  On the State of Development of Ancient Compared with Living Forms

  On the Succession of the Same Types within the Same Areas, during the later Tertiary Periods

  Chapter XII - Geographical Distribution

  Single Centres of Supposed Creation

  Means of Dispersal

  Dispersal during the Glacial Period+

  Alternate Glacial Periods in the North and South

  Chapter XIII - Geographical Distribution - Continued: Fresh-Water Productions

  On the Inhabitants of Oceanic Islands

  Absence of Batrachians and Terrestrial Mammals on Oceanic Islands

  On the Relations of the Inhabitants of Islands to Those of the Nearest Mainland