XXVI 



LIST OF ILLUSTRATIONS 



FIG. 



439. Disarticulation of bird's skull — after Gadow. Membrane 



bones shaded 



440. Vertebral or upper part of the rib of a bird 



441. Under surface of gull's skull 



442. Pectoral girdle and breastbone of an eagle 



443. Wing of dove .... 



444. Side view of pelvis of cassowary 



445. Bones of hind-limb of eagle 



446. Pelvic girdle and hind-limb of a fowl . 



447. Brain of pigeon .... 



448. Diagrammatic section of cloaca of male bird — after Gadow 



449. Heart and arterial system of pigeon 



450. Heart and venous system of pigeon 



451. Diagram of air-sacs of a pigeon. 



452. Female urinogenital organs of pigeon 



453. Male urinogenital organs of pigeon 



454. Pectoral girdle and sternum of swan 



455. Position of wings in pigeon at maximum elevation — from 



Marey ..... 



456. Wings coming down — from Marey 



457. Wings completely depressed — from Marey 



458. Stages in development of chick — after Marshall 



459. Diagrammatic section of egg — after Allen Thomson 



460. Diagrammatic section of embryo — after Kennel 



461. Restoration of Archaeopteryx — by permission of Mr. W. P 



Pycraft ..... 



462. Flightless Apteryx or Kiwi of New Zealand . 



463. Pectoral girdle of an ostrich 



464. Hesperornis — after Marsh 



465. Pectoral girdle and adjacent parts in a gibbon 



466. Diagram of skull bones (partly after Flower and Weber) 



the membrane bones shaded 



467. Occipital region of cat's skull . 



468. Fore-limb and shoulder-girdle and hind-limb of rabbit 



469. Atlas vertebra of a Mammal, side view 



470. Front view of Mammalian atlas 



471. Side view of the axis of a Mammal 



472. Side view of rabbit's skull 



473. Upper surface of rabbit's skull . 



474. Under surface of rabbit's skull . 



475. Skull of capybara 



476. Scapula of a rabbit 



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