During the seven years which have elapsed since the publication in 1868 of the first edition of this Work, I have continued to attend to the same subjects, as far as lay in my power; and I have thus accumulated a large body of additional facts, chiefly through the kindness of many correspondents. Of these facts I have been able here to use only those which seemed to me the more important. I have omitted some statements, and corrected some errors, the discovery of which I owe to my reviewers. Many additional references have been given. The eleventh chapter, and that on Pangenesis, are those which have been most altered, parts having been re- modelled; but I will give a list of the more important alterations for the sake of those who may possess the first edition of this book.
S-- VARIATIONS IN THE SKULL ANALOGOUS TO DIFFERENCES IN DIFFERENT SPECIES OF HARES--VERTEBRAE--STERNUM--SCAPULA--EFFECTS OF USE AND DISUSE ON THE PROPORTIONS OF THE LIMBS AND BODY--CAPACITY OF THE SKULL AND REDUCED SIZE OF THE BRAIN--SUMMARY ON THE MODIFICATIONS OF DOMESTICATED RABBITS.
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.
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