14 Macteay Memorrat Vouume. 
After carefully cutting the intestine open along one side and removing the spiral 
fold along its whole length from the intestine walls, the blood vessels and their 
courses in the latter may be clearly seen when the wall thus opened out is held up 
against the light. 
(b) Right brachial artery. 
This arises immediately behind the cceliaco-mesenteric artery and corresponds in 
ts branches and distribution to the artery of the left side (fig. 14, ~ 67. avz.). 
(c) Iliac, renal, and posterior spermatic (or oviducal) arteries. 
The common trunk giving rise to these arises from the aorta at a point 
somewhat posterior to that from which the corresponding vessel is given off on the 
left side. 
(1) Right thac artery.—As on the left side, its pomt of origin lies close to the 
aorta. It runs outwards, downwards, and backwards to the hind limb of its own 
side (figs. 10 and 14, ~ 2z/. art.) 
(2) Right renal artery.—This runs backwards and supplies the right kidney 
(figs. 10 and 14). 
(3) Right posterior spermatic (or oviducal) artery.—This turns forwards and 
runs through the posterior part of the testis (or ovary), to which it gives off 
branches. Unlike that of the left side, it is not directly continuous with the anterior 
spermatic (or oviducal) of its own side, but the two communicate by small branches 
(figs. 10 and 14, ~ fost. sp. art.). 
IJ1.—Tue Putmonary System. 
Though this, like the arterial arches, has been described by Boas, it will be 
convenient, in order to render this account as complete as possible, to describe it 
here in full. 
Dr. Giinther’s original description showed the nature of the lung so far as 
macroscopic appearances are concerned, and the positions occupied by the vessels on 
the lung.* 
* Phil. Trans. R.S. London, 1871, p. 540. 
