Sculpture, expression of the ideal of beauty by.
Sea-anemones, bright colours of.
Sea-bear, polygamous.
Sea-elephant, male, structure of the nose of the; polygamous.
Sea-lion, polygamous.
Seal, bladder-nose.
Seals, their sentinels generally females; evidence furnished by, on classification; polygamous habits of; battles of male; canine teeth of male; sexual differences; pairing of; sexual peculiarities of; in the coloration of; appreciation of music by.
Sea-scorpion, sexual differences in.
Season, changes of colour in birds, in accordance with the; changes of plumage of birds in relation to.
Seasons, inheritance at corresponding.