On the Origin of Species by Means of Natural Selection, Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 8
... never seed ! In some few such cases it has been discovered that very trifling changes , such as a little more or less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter ...
... never seed ! In some few such cases it has been discovered that very trifling changes , such as a little more or less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter ...
Page 26
... never heard of an instance in England ; and the mongrels were black , brown , and mottled . I also crossed a barb with a spot , which is a white bird with a red tail and red spot on the forehead , and which notoriously breeds very true ...
... never heard of an instance in England ; and the mongrels were black , brown , and mottled . I also crossed a barb with a spot , which is a white bird with a red tail and red spot on the forehead , and which notoriously breeds very true ...
Page 28
... never less than 20,000 pigeons were taken with the court . " The monarchs of Iran and Turan sent him some very rare birds ; " and , continues the courtly historian , " His Majesty by crossing the breeds , 28 CHAP . I. DOMESTIC PIGEONS .
... never less than 20,000 pigeons were taken with the court . " The monarchs of Iran and Turan sent him some very rare birds ; " and , continues the courtly historian , " His Majesty by crossing the breeds , 28 CHAP . I. DOMESTIC PIGEONS .
Page 29
... never practised before , has improved them astonishingly . " About this same period the Dutch were as eager about pigeons as were the old Romans . The paramount importance of these considerations in ex- plaining the immense amount of ...
... never practised before , has improved them astonishingly . " About this same period the Dutch were as eager about pigeons as were the old Romans . The paramount importance of these considerations in ex- plaining the immense amount of ...
Page 31
... never desire to sit , and with the bantam so small and elegant ; when we compare the host of agricultural , culinary , orchard , and flower - garden races of plants , most useful to man at different seasons and for different purposes ...
... never desire to sit , and with the bantam so small and elegant ; when we compare the host of agricultural , culinary , orchard , and flower - garden races of plants , most useful to man at different seasons and for different purposes ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living male mammals manner Marsupials migration modification modified descendants mongrels natural selection naturalists nearly nest occasionally offspring organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor racter ranked reciprocal crosses remarked resemble rudimentary organs seeds Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely