DR. J. MURIE ON THE ANATOMY OF THE WALRUS. 463 
terminal extremity. /. Ligament covering the bone=suspensory aponeurosis. 
p. Preputium. g. Glans. m.w. Orifice and subpendulous meatus urinarius. 
. 18. Portions of urethra and bladder cut open, from above. w. Vesicle openings of 
ureters. Py. Prostate gland, thin and partially enclosed within the urethral 
wall. e.d. ejaculatory ducts. c.c. Corpus cavernosum at bulb. 
PLATE LV. 
g. 19. Dissected view of the thoracic and renal organs in situ. The sternal wall 
with cartilages, the diaphragm, liver, stomach, and intestines have beeu 
removed. JZ. Lungs. H. Heart. ao. Abdominal aorta. K. Kidney. Spg. 
Right suprarenal gland. vc. Vena cava cut short above the emulgent veins. 
. 20. Semidiagrammatic view of the undisturbed abdominal viscera. JL. Liver. St. 
Stomach. wm. umbilicus. ap. penal aperture. mg. a nodule of the mesen- 
teric glands, and beside it portion of right kidney. B. Bladder. 
. 21. A reduced sketch of the cecum, with portion of the small and great intestine. 
ce. Cecum. 7. Ilium. ec. Colon. 
. 22. Under or abdominal surface of the liver and its great venous reservoir, with 
segments of the stomach and duodenum attached. S¢. Cut end of stomach. 
Py. Pyloric orifice, opened. Pa. Portion of pancreas. Gb. Gall-bladder. deh. 
Ductus communis choledochus. 7. Reservoir of the bile-duct within the 
intestine. 0. Its intestinal orifice. r/. Round ligament. ha. Hepatic artery. 
n. Nerves. v.c. Vena cava. vs, vs”. Hepatic yenous sinus, partially opened 
on the left side. D. Small part of the diaphragm with the caval aperture 
piercing it, through which the arrow issues. Nos. 1 to 7. The several lobes 
of the liver: dotted lines connect together portions representative of a right 
and a left lobe. 
Fig. 23. Outline diagram of the dilated hepatic vena cava, showing by arrows the 
convergent blood-streams towards the diaphragmatic orifice. The cross 
arrow indicates the communication betwixt the right and left moieties, 
otherwise partially divided by a membranous wall. 
Fig. 24. Dissection to display the vessels &c. at the root of the heart and the brachial 
plexus. a. Tip of right, and a* of left auricle. 7. Upper lobe of left lung. 
Pa. Pulmonary artery at root. ao. Aorta. ¢ and ca*. Right and left 
carotids. 7. Innominate trunk. rs and /s. Right and left subclavian. im, 
im*. Internal mammary. Va,Va*. Vertebrals. ss, ss*. Suprascapular arteries. 
Bpa. Brachial plexus of nerves. pn. Pneumogastric nerve. Sy. sympathetic 
ganglia. Ve. Vena cava ascendens and descendens. Pima. Portion of pectoralis 
muscle &c. of left side. tr. Trachea. 
Fig. 25. Sketch of the left groin and tibio-caudal region partially dissected, to show the 
situation of the testis. Z. Testicle. ¢.v. Tunica vaginalis, ripped open; the 
VOL. VII.—PART vi. June, 1871. 37 
