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 20
... 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 ...
... 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 ...
Page 33
... 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 35
... were given for pigeons ; nay , they are come to this pass , that they can reckon up their pedigree and race . " Pigeons were much valued by Akber Khan in India , about the 66 66 " " year 1600 ; never less than 20,000 DOMESTIC PIGEONS 35.
... were given for pigeons ; nay , they are come to this pass , that they can reckon up their pedigree and race . " Pigeons were much valued by Akber Khan in India , about the 66 66 " " year 1600 ; never less than 20,000 DOMESTIC PIGEONS 35.
Page 36
... 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 , which method was never practised ...
... 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 , which method was never practised ...
Page 37
... 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 analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised 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 increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely