The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page 140
... marsupials , which are divided into groups dif- fering but little from each other , and feebly represent- ing , as Mr. Waterhouse and others have remarked , our carnivorous , ruminant , and rodent mammals , could suc- cessfully compete ...
... marsupials , which are divided into groups dif- fering but little from each other , and feebly represent- ing , as Mr. Waterhouse and others have remarked , our carnivorous , ruminant , and rodent mammals , could suc- cessfully compete ...
Page 154
... marsupials , edentata , and rodents , co - exist in South America in the same region with nu- merous monkeys , and probably interfere little with each . other . Although organisation , on the whole , may have advanced and be still ...
... marsupials , edentata , and rodents , co - exist in South America in the same region with nu- merous monkeys , and probably interfere little with each . other . Although organisation , on the whole , may have advanced and be still ...
Page 295
... marsupial form ; and if so , the mam- mary glands will have been at first developed within the marsupial sack . In the case of the fish ( Hippocampus ) the eggs are hatched , and the young are reared for a time , within a sack of this ...
... marsupial form ; and if so , the mam- mary glands will have been at first developed within the marsupial sack . In the case of the fish ( Hippocampus ) the eggs are hatched , and the young are reared for a time , within a sack of this ...
Page 297
... marsupial form ) , " this at least perfectly innocent and harmless structure ? " It may be suggested in an- swer that the voice , which is certainly of high importance to many animals , could hardly have been used with full force as ...
... marsupial form ) , " this at least perfectly innocent and harmless structure ? " It may be suggested in an- swer that the voice , which is certainly of high importance to many animals , could hardly have been used with full force as ...
Page 311
... marsupial sack secreted a nutritious fluid ; and that these glands were improved in function through natural selection , and concentrated into a confined area , in which case they would have formed a mamma . There is no more difficulty ...
... marsupial sack secreted a nutritious fluid ; and that these glands were improved in function through natural selection , and concentrated into a confined area , in which case they would have formed a mamma . There is no more difficulty ...
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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 lamellæ larvæ 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