632 SPECIAL HISTOLOGY. 



cles, ^Yllicll are 0-04-0-08 of a line wide. More simple forms of glands 

 of this kind (Fig. 161) are occasionally met with intermixed with the 

 others ; and in the pars prostatica^ instead of them, we find minute 

 mucous follicles, similar to those which have been before described as 

 occurring in the cervix vesicce. The epitheliwn, both in the vesicles of 

 the "glands of Littre" and in the excretory ducts, 1-2 lines long, 

 which are directed forwards, penetrating the mucous membrane obliquely, 

 is cylindrical ; in the former situation, however, more or less approach- 

 ing the tessellated form (Fig. 261); the secretion is common mucus, 

 which in dilatations of the glandular follicles is, not unfrequently, col- 

 lected in some quantity. Some minute, inconstant fossse of the mucous 

 membrane have been termed laeunce Morgagni, in which I have been 

 unable to detect anything of a glandular nature. The fascia jjenis, a 

 tissue abounding in finer elastic fibres, surrounds the penis, from the 

 root to the glans, being, in the former situation, in connection with the 

 perineal fascia, and that of the inguinal region, and also contributes to 

 the formation of the susperisory ligament of the penis, a structure very 

 rich in true elastic tissue, which extends from the symphysis to the 

 dorsum p)enis. Externally it is continuous, without any line of demar- 

 cation, with the skin of the p)enis, which, up to the free border of the 

 prepuce, a simple duplicature of it, possesses the nature of the common 

 integument ; though certainly characterized by its delicacy, and the pre- 

 sence of a layer of smooth muscles in the abundant, fatless, subcutaneous 

 tissue, a continuation of the tunica dartos [vid. § 34), which extends as 

 far as into the prepuce. At the border of the prepuce the integument 

 of the penis assumes more of the nature of a mucous membrane, and is 

 no longer furnished with hairs and sudoriparous glands, although it has 

 well-developed papillce; it is still thinner than before, and on the glans 

 is intimately connected with the spongy body, and covered with a softer 

 cuticle (§ 42, Fig. 56, 4), always, however 0-035-0-056 of a line thick. 

 With respect to the sebaceous glands [gl. Tysonianai), which exist in 

 this situation, and the formation of the preputial smegma, consult §§ 

 46, 74. 



The arteries of the penis are derived from the p)udic, and are pecu- 

 liar only in the way in which they supply the corpora spongiosa. In 

 the corj}. cav. penis, except a few small twigs from the a. dorsalis, the 



urethra, unites with the external coat, at the lips of the urethra, so as to form a sort of sphincter. 

 Mr. Hancock also discovered and described the abundant organic muscles surrounding the 

 vesicles and ducts of the prostate, which, though admitted in the text, were denied by Prof. 

 Kolliker, in his Essay upon the distribution of the organic muscles in Siebold and Kolliker, 

 Zeitschrift. Mr. Hancock further states that the muscular fibres of the membranous portion 

 of the urethra are continued over the inner and outer surfaces of the prostate, into the mus- 

 cular coat of the bladder, so that, according to his view, there is one continuous muscular 

 coat, from the bladder to the end of the penis, which twice separates into two layers; pos- 

 teriorly, to enclose the ])rostate, anteriorly, to envelop the spongy tissue of the corpus spon- 

 giosum. — See Hancock on the "Anatomy and Physiology of the Urethra," 1S52. — Tes.] 



