THE MALE GENITAL TEACT. 



821 



quently, peculiar, concentrically striated colloid corpuscles of a 

 high luster are observed the so-called prostatic concretions. 



According to Langerhans, the epithelia of the gland are 

 arranged in two layers, the superficial being conical and elon- 

 gated, the deeper globular; Toldt maintains having seen this 

 arrangement in one prostate gland, while in three others which 

 he studied only one layer of columnar epithelia was present. 

 There seem to be varieties in the arrangement of the glandular 

 epithelia. The interstitial tissue is scantily supplied with con- 

 nective tissue, but plentifully with smooth muscle-fibers, which 

 are arranged without any apparent regularity. At the periphery 

 of the prostate gland the muscle-bundles coalesce, forming con- 

 tinuous layers, and in this situation are freely intermixed with 



JTJS 



FIG. 373. PROSTATE GLAND OF AN ADULT. 



M, interstitial connective tissue, rich in bundles of smooth muscle-fibers ; F, cuboidal 

 epithelia, lining the convoluted acini ; C, prostatic concretions. Magnified 200 diameters. 



striped muscles, which surround the gland. The smooth muscle- 

 layers are continuous with the circular sphincter muscles of the 

 bladder. 



(7) Cowper's glands are acinous glands, with irregular sinu- 

 osities and stratified cuboidal epithelia, The lobules of these 

 glands are separated from each other by dense fibrous connective 

 tissue, which is traversed at the peripheral portions by bundles 



