. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. 86 Darwin, and after Darwin. it is also in the human foetus proportionally compared with the adult. (Fig. 19.) In some of the lower herbi- vorous animals it is longer than the entire body. Like vestigial structures in general, however, this one is highly variable. Thus the above cut (Fig. 19) serves to show that it may sometimes be almost as short in the orang as it normally is in man—both the human subjects of this illustration having been normal. (7) Ear.—Mr. D
. Darwin, and after Darwin. An exposition of the Darwinian theory and a discussion of post-Darwinian questions. Evolution; Heredity. 86 Darwin, and after Darwin. it is also in the human foetus proportionally compared with the adult. (Fig. 19.) In some of the lower herbi- vorous animals it is longer than the entire body. Like vestigial structures in general, however, this one is highly variable. Thus the above cut (Fig. 19) serves to show that it may sometimes be almost as short in the orang as it normally is in man—both the human subjects of this illustration having been normal. (7) Ear.—Mr. Darwin writes :— The celebrated sculptor, Mr. Woolner, informs me of one little peculiarity in the external ear, which he has often observed both in men and women .... The peculiarity consists in a little blunt point, projecting from the inwardly folded margin, or helix. When present, it is developed at birth, and, according to Prof. Ludwig Meyer, more frequently in man than in woman. Mr. Woolner made an exact model of one such case, and sent me the accompanying drawing .... The helix obviously consists of the extreme margin of the ear folded inwards; and the folding appears to be in some ear, manner connected with the whole ex- modelled and drawn by ^ , , • ^, , •Mr- \r.^r- ^ +v,i tcmal Car bemg permanently pressed backwards. In many monkeys, which do not stand high in the order, as baboons and some species of macacus, the upper portion of the ear is slightly pointed, and the margin is not at all folded inwards; but if the margin were to be thus folded, a slight point would necessarily project towards the centre .... The following wood-cut is an accurate copy of a photograph of the foetus of an orang (kindly sent me by Dr. Nitsche), in which it inay be seen how different the pointed outline of the ear is at this period from its adult condition, when it bears a close. Fig. 20. Human Mr. Woolner. projecting point. the. Please note that these images are extracted fr
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