. Surgery, its principles and practice . Fig. 274.—Peostatic Urethra, Upper Por-tion (Stern).One and one-half cm. below internal urinarymeatus. Fig. 275.—Prostatic Urethra, Middle Por-tion (Stern).Caput galli and sinus pocularis with orificesof ejaculatory ducts. are usually about the meatus and on the floor of the urethra. The con-dition sometimes follows as the result of instrumentation. The normal luster of the urethral mucous membrane becomes alteredas the result of chronic inflammatory conditions, and any deviationshould be carefully noted. Superficial erosions and ulcerations are oc-

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