The Descent of Man

and 

Selection In Relation to Sex

By Charles Darwin, M.A., F.R.S.

Part II 

 Sexual Selection.

• Chapter VIII.
• Principles Of Sexual Selection.
• Numerical Proportion Of The Two Sexes.
• Polygamy.
• The Male Generally More Modified Than The Female.
• Laws Of Inheritance.
• Inheritance At Corresponding Periods Of Life.
• Inheritance At Corresponding Seasons Of The Year.
• Inheritance As Limited By Sex.
• On The Relation Between The Period Of Development Of A Character And Its Transmission To One Sex Or To Both Sexes.
• Summary And Concluding Remarks.
• Supplement On The Proportional Numbers Of The Two Sexes In Animals Belonging To Various Classes.
• Man.
• Horses.
• Dogs.
• Sheep.
• Birds.
• Fish.
• Insects.
• The Proportion Of The Sexes In Relation To Natural Selection.
• Chapter IX.
• Secondary Sexual Characters In The Lower Classes Of The Animal Kingdom.
• The Sub-kingdom Of The Mollusca.
• Sub-kingdom Of The Vermes: Class, Annelida (or Sea-worms).
• Sub-kingdom Of The Arthropoda: Class, Crustacea.
• Class, Arachnida (spiders).
• Class, Myriapoda.
• Chapter X.
• Secondary Sexual Characters Of Insects.
• Difference In Size Between The Sexes.
• Order, Thysanura.
• Order, Diptera (flies).
• Order, Hemiptera (field-bugs).
• Order: Homoptera.
• Order, Orthoptera (crickets And Grasshoppers).
• Order, Neuroptera.
• Order, Hymenoptera.
• Order, Coleoptera (beetles).
• Law Of Battle.
• Stridulating Organs.
• Chapter XI.
• Order Lepidoptera. (butterflies And Moths.)
• Display.
• Mimicry.
• Bright Colours Of Caterpillars.
• Summary And Concluding Remarks On Insects.
• Chapter XII.
• Secondary Sexual Characters Of Fishes, Amphibians, And Reptiles.
• Amphibians.
• Urodela.
• Anura Or Batrachia.
• Reptiles.
• Chelonia.
• Crocodilia.
• Ophidia.
• Lacertilia.
• Chapter XIII.
• Secondary Sexual Characters Of Birds.
• Law Of Battle.
• Vocal And Instrumental Music.
• Love Antics And Dances.
• Decoration.
• Display By Male Birds Of Their Plumage.
• Chapter XIV.
• Length Of Courtship.
• Unpaired Birds.
• Mental Qualities Of Birds, And Their Taste For The Beautiful.
• Preference For Particular Males By The Females.
• Variability Of Birds, And Especially Of Their Secondary Sexual Characters.
• Formation And Variability Of The Ocelli Or Eye-like Spots On The Plumage Of Birds.
• Gradation Of Secondary Sexual Characters.
• Argus Pheasant.
• Chapter XV.
• Birds--continued.
• Chapter XVI.
• Birds--concluded.
• Rules Or Classes Of Cases.
• Class I.
• Class II.
• When The Adult Female Is More Conspicuous Than The Adult Male, The Young Of Both Sexes In Their First Plumage Resemble The Adult Male.
• Class III.
• When The Adult Male Resembles The Adult Female, The Young Of Both Sexes Have A Peculiar First Plumage Of Their Own.
• Class IV.
• When The Adult Male Resembles The Adult Female, The Young Of Both Sexes In Their First Plumage Resemble The Adults.
• Class V.
• When The Adults Of Both Sexes Have A Distinct Winter And Summer Plumage, Whether Or Not The Male Differs From The Female, The Young Resemble The Adults Of Both Sexes In Their Winter Dress, Or Much More Rarely In Their Summer Dress, Or They Resemble The Fe
• Class VI.
• The Young In Their First Plumage Differ From Each Other According To Sex; The Young Males Resembling More Or Less Closely The Adult Males, And The Young Females More Or Less Closely The Adult Females.
• On The Colour Of The Plumage In Relation To Protection.
• Summary Of The Four Chapters On Birds.
• Chapter XVII.
• Secondary Sexual Characters Of Mammals.
• Choice In Pairing By Either Sex Of Quadrupeds.
• Chapter XVIII.
• Odour.
• Development Of The Hair.
• Colour Of The Hair And Of The Naked Skin.
• Equal Transmission Of Ornamental Characters To Both Sexes.
• Quadrumana.
• Summary.

[ Table of Contents ] [ Preface ] [ Introduction ] [ Part I. ] [ Part II. ] [ Part III. ] [ Index ]

[ 홈 ] [ The Autobiography of Charles Darwin ] [ The Autobiography of Charles Darwin ] [ Origin of Species ] [ The Descent of Man ] [ The Voyage of Beagle ] [ About Charles Robert Darwin ]