of the, in the sexes of man.
Penelope nigra, sound produced by the male.
Pennant, on the battles of seals; on the bladder-nose seal.
Penthe, antennal cushions of the male.
Perch, brightness of male, during breeding season.
Peregrine falcon, new mate found by.
Period of variability, relation of, to sexual selection.
Periodicity, vital, Dr. Laycock on.
Periods, lunar, followed by functions in man and animals.
Periods of life, inheritance at corresponding.
Perisoreus canadensis, young of.
Peritrichia, difference of colour in the sexes of a species of.
Periwinkle.
Pernis cristata.
Perrier, M., on sexual selection; on bees.
Perseverance, a characteristic of man.
Persians, said to be improved by intermixture with Georgians and
Circassians.
Personnat, M., on Bombyx Yamamai.
Peruvians, civilisation of the, not foreign.
Petrels, colours of.
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