Between these limits the symptoms range, but in a general way it may be said that the symptoms of chronic vesical catarrh are these: frequent calls to urinate, attended by more or less pain, especially toward and after the termination of the act. The sense of satisfaction normally felt after urination is generally absent. Motion, particularly jolting as in rough riding, causes pain. This pain is referred to the lower part of the belly, to the perineum, to the end of the penis, the urethra, the anus. The straining after urination may be absent or of the most intense character, leading to prolapse of the rectum and causing excruciating torture. The urine always contains pus scattered through it, and generally also more or less pus in that semi-solid condition known as stringy mucus. Stringy mucus is pus gelatinized by the ammonia of the decomposing urine. These clots of muco-pus contain gritty crystals of the ammonio-magnesian phosphate. More or less blood is to be found in the urine, especially during acute paroxysms. Pure blood sometimes follows the urine after each act of urination. Bacteria abound in the fluid, which varies in odor greatly in different cases, not always strictly in accordance with the severity of the actual inflammatory process. Thus, the urine may be simply sweetish in its odor, ammoniacal, flat, and stale, or be possessed of a putrid, sickening sweetness of indescribably nauseating power. Again, it may be rankly rotten. The bottom of the chamber in some cases becomes {130} covered with a thick coating of the viscid muco-pus, which strings out and reluctantly follows the fluid when the vessel is inverted. Sometimes the urine contains shreds of false membrane or putrid masses of sloughy tissue. PATHOLOGY.--In chronic cystitis the mucous membrane of the bladder undergoes gradual thickening, loses its pink salmon tint, and becomes gray in color. The thickening extends to the submucous layer, and more or less to the muscular walls as well. In cases of prolonged chronic cystitis attending atony of the bladder, notably with hypertrophied prostate, the cavity of the organ is large, its walls seemingly thinned and flabby, its internal coat roughened by the crossing of bundles of muscular fibres or perhaps perfectly smooth. In other conditions (concentric hypertrophy), where there has been a serious obstacle to the free outflow of urine without any atony of the muscular coat (stricture of the urethra, some cases of stone and of enlarged prostate), the walls of the bladder may be enormously thickened to the extent of an inch or more, the inside surface rough, perhaps ulcerated.