50 PROF. OWEN ON THE ANATOMY OF THE INDIAN RHINOCEROS. 
situated two large subcompressed oval Cowperian glands (Jb., c,c). Each of these 
measures three inches and a half by two inches and a half. The structure of the corpus 
cavernosum resembles that of the Horse. 
The great plexus of veins above the dorsum penis near its root, was enveloped in a 
mass of elastic tissue, like the ‘ dartos’ of the human scrotum. ; 
The fleshy part of the ‘levatores penis’ (Pl. XVII. //) measures fourteen inches in length, 
five inches across their basal origin, and between one and two inches in thickness. 
Their oblique origin is extended over the space of one foot from the ento-pelvic part of 
the pubis down to the ischium. The tendinous part of the muscle commences where 
the pubic portion joins the ischial portion of the muscle at the inner and under border 
of the fleshy part: it is half an inch thick at its commencement, but expands as it ex- 
tends along the muscle, the fleshy fasciculi of which are inserted into the tendon in an 
obliquely converging, or semi-penniform manner. As the tendon augments in breadth, 
it diminishes in thickness, converging towards its fellow, which it meets and joins two 
inches before the anterior termination of the fleshy portion. The two united flattened 
tendons beyond are gradually converted into a round chord of ligamentous substance an 
inch in diameter. This chord (Ib. /’) glides through a strong, slightly elastic aponeurotic 
sheath along the median groove of the dorsum penis; it is connected with the inner 
surface of the sheath by a highly elastic cellular tissue ; the chord maintains its ropelike 
character along the basal third of the glans (Jb. J’), then subsides, expanding laterally, 
and is finally lost upon the firm capsule of the glans. There is no ‘ os penis.’ 
The nerves of the dorsum penis, the arteries, and trunks of two large plexuses of 
veins, pass beneath the bridge formed by the contluence of the tendinous and muscular 
parts of the ‘levatores penis’ and between the two suspensory ligaments of the penis. 
These ligaments are an inch in breadth, and one-third of an inch in thickness at their 
origin from the ischio-pubic arch a little in advance of the ligamentous attachments of 
the crura corporis cavernosi. 
The total length of the undistended penis is three feet nine inches ; the circumference 
of the prepuce is one foot five inches. 
The external and constantly exposed firmer tegumentary part of the prepuce has been 
already described, and is figured in Pl. IX. fig. 4. 
The substance of the large reflected preputial fold of softer integument (Pl. IX. fig. 5, 
and Pl. XVII. fig. i, pr) is from half an inch to two-thirds of an inch in thickness, and 
consists of a moderately compact cellular corium, with a delicate epiderm, minutely rugose 
in the transverse direction, and perforate or punctate with the pores of the mucous 
follicles which are very regularly dispersed at intervals of about a quarter of an inch. 
The glans penis (Jb. ib. gl) is a long and slender subcompressed cone with a truncate 
apex; it measured in its flaccid undistended state, one foot in length: the prepuce is 
reflected upon its base at the same transverse or circular line, and there is no frenum. 
The apex (PI. IX. figs. 5 & 6, and Pl. XVII. figs. 1, 2 & 3, a) is not simple, but resembles 
