...modification may be slowly increased by the accumulative action of natural selection to any profitable extent. The variety thus formed will either coexist with,...parent form. An organic being, like the woodpecker or misseltoe, may thus come to be adapted to a score of contingences — natural selection accumulating...

...danger at various times of life, to have, their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...form. An organic being like the woodpecker, or the mistletoe, may thus come to be adapted to a score of contingencies ; natural selection, accumulating...

...danger at various times of life, to have their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...form. An organic being like the woodpecker, or the mistletoe, may thus come to be adapted to a score of contingencies ; natural selection, accumulating...

...danger at various times of life, to have their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...form. An organic being like the woodpecker, or the mistletoe, may thus come to be adapted to a score of contingencies ; natural selection, accumulating...

...danger at various times of life, to have their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...form. An organic being like the woodpecker, or the mistletoe, may thus come to bs adapted to a score of contingencies ; natural selection, accumulating...

...&c., &c., I cannot doubt that during millions of generations individuals of a species will be bor n with some slight variation profitable to some part...form. An organic being like the woodpecker, or the gencies; natural selection, accumulating those slight variations in all parts of its structure which...

...danger at various times of life, to have their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...have a better chance of surviving, propagating this variat1on, which again will be slowly increased by the accumulative act1on of natural selection ; and...

...prove " (ii. 240). " I cannot doubt" is another such expression of his. " I cannot doubt," he says, " that during millions of generations individuals of...variation profitable to some part of its economy." That is his whole doctrine in its one creative bud : individuals vary to advantage; and it rests on...

...prove " (ii. 240). " I cannot doubt" is another such expression of his. " I cannot doubt," he says, " that during millions of generations individuals of...variation profitable to some part of its economy." That is his whole doctrine in its one creative bud : individuals vary to advantage ; and it rests on...

...danger at various times of life, to have their eggs or seeds disseminated, &c., &c., I cannot doubt that during millions of generations individuals of...form. An organic being like the woodpecker, or the mistletoe, may thus come to be adapted to a score of contin1858.] THE LETTER TO DR. GRAY. 48I gencies...