OCR Text |
Show 166 PROF. W. H. FLOWER ON THE MUSK-DEER. [Mar. 16, (though rather smaller), and an upper triangular portion, very much smaller than the right upper lobe*. Fig. 4. The lungs, posterior aspect; half natural size. L U, left upper lobe; L, left lower lobe; B U, BM, and RL, right upper. middle, and lower lobes; A, azygos lobe. The heart (fig. 5) is an elongated cone in form, measuring 2g" in length, l"-9 from side to side at greatest breadth, and l|"from before backwards when undistended. A single common anterior arterial trunk is given off from the aorta at its commencement. After a course of 1"*3 in length, and having a diameter of 0"*27, this gives off the left brachial (L B) from which the left vertebral is derived (L V). About a quarter of an inch beyond, the right brachial (B B) comes off; and immediately after, the trunk bifurcates into the two common carotids (B C and L C). The right vertebral (B V) is given off from the innominate trunk behind the origin of the right subclavian -f\ * The lungs of the Pudu have the same general arrangement as those ot Moschus; but the right middle lobe is very little divided from the right lower. t In the Pudu, the anterior aortic trunk proceeds for 0"#9, then gives off the left brachial, then after a further course of 0"-5 gives off the right brachial and |