194 NORMAL HISTOLOGY. 



THE PROSTATE GLAND. 



The prostate is a racemose gland, in which the 

 alveoli, instead of being more or less spheroidal, as 

 is usually the case in racemose glands, are often 

 very much elongated and irregular in shape, and 

 very frequently present high, narrow, irregular folds 

 in their walls. The alveoli are lined for the most 

 part with a single layer of cylindrical epithelium. 

 The excretory ducts are lined, within the gland, with 

 cylindrical, which pass over into flattened cells, as 

 they approach the urethral orifice. The alveoli and 

 ducts lie imbedded in a dense mass of interlacing 

 bundles of smooth muscular tissue, intermingled 

 with elastic fibres and a small amount of fibrillar 

 connective tissue. In the periphery of the gland 

 the muscular tissue forms a sort of capsule of vary- 

 ing thickness, which, in turn, is enclosed in a fibrous 

 tunic. 



TECHNIQUE. 



Section of Gland. A bit of that portion of the pros- 

 tate gland of man which lies behind the urethra, is 

 hardened in potassium bichromate and alcohol, and the 

 sections are stained double and mounted in balsam. 



URETHRA AND CORPUS SPONGIOSUM. 



The tissues which form the penis are so various, 

 and present such essential differences in their 

 arrangement in different parts of the organ, that a 

 detailed study of its structure does not lie within the 

 scope of this manual. Inasmuch, however, as the 



