Ardea nycticorax, cries of.
Ardeola, young of.
Ardetta, changes of plumage in.
Argenteuil.
Argus pheasant, display of plumage by the male; ocellated spots of the; gradation of characters in the.
Argyll, Duke of, on the physical weakness of man; the fashioning of implements peculiar to man; on the contest in man between right and wrong; on the primitive civilisation of man; on the plumage of the male Argus pheasant; on Urosticte Benjamini; on the nests of birds.
Argynnis, colouring of the lower surface of.
Aricoris epitus, sexual differences in the wings of.
Aristocracy, increased beauty of the.
Arms, proportions of, in soldiers and sailors; direction of the hair on the.