. Evolution and its relation to religious thought . because it is no longer wanted. I say gradually, for allthe steps of the passing away may be found. The use-less rudimentary condition is not uncommon. PROOFS FROM HOMOLOGIES. 97 2. The coracoid (c), it is seen, is a small, beak-likeprocess of the blade-bone (scapula) in man and mam-mals ; but in birds (Fig. 11) and reptiles (Figs. 14, 18). •^cc^ Fig. 10. Fig. 11. Fig. 12. Fig. 13. Figs. 10-13.—10. Fore-limb of bat. 11. Bird. 12. Archseopteryx. (Lettered as in previous figures ; grouped from varioussources.) it is a separate b
. Evolution and its relation to religious thought . because it is no longer wanted. I say gradually, for allthe steps of the passing away may be found. The use-less rudimentary condition is not uncommon. PROOFS FROM HOMOLOGIES. 97 2. The coracoid (c), it is seen, is a small, beak-likeprocess of the blade-bone (scapula) in man and mam-mals ; but in birds (Fig. 11) and reptiles (Figs. 14, 18). •^cc^ Fig. 10. Fig. 11. Fig. 12. Fig. 13. Figs. 10-13.—10. Fore-limb of bat. 11. Bird. 12. Archseopteryx. (Lettered as in previous figures ; grouped from varioussources.) it is a separate bone as large as the blade-bone itself,jointed with the latter at the shoulder and with thebreast-bone (sternum) in front, thus making together astrong shoulder-girdle for the attachment of the fore-limb. This was undoubtedly the condition in the origi-nal or earliest walking animal, viz., reptiles. It wasinherited and retained by birds, because necessary forpowerful action of the wings in flight. In mammals itgradually dwindled and became united with the blade-bone as a process. In one mammal, the lowest and most 98 EVIDENCES OF THE TRUTH OF EVOLUTIOK reptilian living—the ornithorliynclius—tlie coracoid ismuch like that of re|)tiles—a large, flat bone, separatedfrom the blade-bone and articulated with the breast-
Size: 1919px × 1302px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlecontej, bookcentury1800, bookdecade1880, bookyear1888
