The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life and The Descent of Man and Selection in Relation to SexModern library, 1936 - 1000 páginas |
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Página 274
... allied , than it is at present , to the northern half . In a similar manner we know , from Falconer and Cautley's discoveries , that Northern India was for- merly more closely related in its mammals to Africa than it is at the pres- ent ...
... allied , than it is at present , to the northern half . In a similar manner we know , from Falconer and Cautley's discoveries , that Northern India was for- merly more closely related in its mammals to Africa than it is at the pres- ent ...
Página 323
... allied to others , and these to others , and so onwards , can be recognised as unequivocally belonging to this , and to no other class of the Articulata . Geographical distribution has often been used , though perhaps not quite ...
... allied to others , and these to others , and so onwards , can be recognised as unequivocally belonging to this , and to no other class of the Articulata . Geographical distribution has often been used , though perhaps not quite ...
Página 788
... allied birds such as estriches , are covered with longitu- dinally striped down ; but this character points back to a state of things so remote that it hardly concerns us . Young cross - bills ( Loxia ) have at first straight beaks like ...
... allied birds such as estriches , are covered with longitu- dinally striped down ; but this character points back to a state of things so remote that it hardly concerns us . Young cross - bills ( Loxia ) have at first straight beaks like ...
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The Origin of Species by Means of Natural Selection: Or, The Preservation of ... Charles Darwin Vista de fragmentos - 1936 |
Términos y frases comunes
acquired adult allied apes appear beak beautiful become believe birds breeds cause characters civilised closely colour common confined crossed crustaceans degree descended developed distinct species domestic doubt eggs existing extinct extremely fact favourable feathers female fertility fishes formation forms Fritz Müller genera genus given gradations greater number groups habits Hence hybrids important individuals inhabitants inherited insects instance instincts intermediate islands kind larvæ latter Lepidoptera less likewise living lower animals Malay Archipelago males mammæ mammals manner Marsupials modified monkeys natural selection naturalists nearly nest observed ocelli offspring organs Origin of Species ornaments perfect period pigeons plumage pollen present probably produced progenitor quadrupeds races Red Grouse relation remarks resemble rudimentary seeds sexes sexual selection shew shewn slight South America sterility stridulating structure supposed tail tion variability variations varieties various vary whilst whole widely wings young