OCR Text |
Show 684 DR. WALTER K1DD ON THE [June 19, line nearly parallel with the mesial plane. This is universal in Horses, and much more general than either A or B, being found in most Ungulates and Carnivores. Fig. 3. CEPHALO-HUMERAL. UPPER PART OFPECT MAJ. LOWER PART OP PECT. MAJ. /-EXTENSOR ICARP1-RADIAUS. Front view of pectoral region of Horse, the left side showing muscles with opposing actions, the right showing pectoral whorl with feathering. Two further points may be referred to. First, neither A nor B has been found in any but the Ungulate Order; second, in 9 of the 25 Ungulates noted, A and B co-existed. The suggested interpretation of these facts is that they are due to tbe effect on the plastic hair-streams of the markedly divergent traction of the underlying muscles. These are seen to have a striking opportunity of influencing the structures lying over them, in each of the three regions alluded to, by a reference to the diagrams. |