Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original paucity of birds in this archipelago, one species had been taken and modified for different ends.


The Descent of Man and Selection in Relation to Sex (ed. Library of Alexandria, 1871) - ISBN: 9781465530127


Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original...

Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original...

Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original...

Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original...