The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
From inside the book
Results 1-5 of 100
Page x
... modified . On the modification of the eye . Transitions through the acceleration or retarda- tion of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
... modified . On the modification of the eye . Transitions through the acceleration or retarda- tion of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
Page xi
... modified . Homological structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr ... modification of species , as always maintained in this work . The belief in the separate creation of species gen ...
... modified . Homological structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr ... modification of species , as always maintained in this work . The belief in the separate creation of species gen ...
Page xxiii
... modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the necessary acquirement of each mental power and capacity by gra- dation . In 1852 M ...
... modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the necessary acquirement of each mental power and capacity by gra- dation . In 1852 M ...
Page xxiv
... modified . The distinction . of species he explains by the destruction of intermediate graduated forms . " Thus ... modification . Dalton , likewise , in Pander and Dalton's work on Fossil Sloths , expressed , in 1821 , a similar belief ...
... modified . The distinction . of species he explains by the destruction of intermediate graduated forms . " Thus ... modification . Dalton , likewise , in Pander and Dalton's work on Fossil Sloths , expressed , in 1821 , a similar belief ...
Page xxvi
... modification of pre - existing species a hypothesis which , though un- proven , and sadly damaged by some of its supporters , is yet the only one to which physiology lends any countenance ; their existence would seem to show that the ...
... modification of pre - existing species a hypothesis which , though un- proven , and sadly damaged by some of its supporters , is yet the only one to which physiology lends any countenance ; their existence would seem to show that the ...
Other editions - View all
Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young