Chapter 6

DOMESTIC PIGEONS.

ENUMERATION AND DESCRIPTION OF THE SEVERAL BREEDS--INDIVIDUAL VARIABILITY-- VARIATIONS OF A REMARKABLE NATURE--OSTEOLOGICAL CHARACTERS: SKULL, LOWER JAW, NUMBER OF VERTEBRAE--CORRELATION OF GROWTH: TONGUE WITH BEAK; EYELIDS AND NOSTRILS WITH WATTLED SKIN--NUMBER OF WING-FEATHERS AND LENGTH OF WING- -COLOUR AND DOWN--WEBBED AND FEATHERED FEET--ON THE EFFECTS OF DISUSE-- LENGTH OF FEET IN CORRELATION WITH LENGTH OF BEAK--LENGTH OF STERNUM, SCAPULA, AND FURCULUM--LENGTH OF WINGS--SUMMARY ON THE POINTS OF DIFFERENCE IN THE SEVERAL BREEDS.