In =Circumscribed Prostatic Abscess= we find, in addition to the general hyperæmia and swelling, a much more prominent local swelling, the seat of intense inflammation, at first firm and resistant and later softer and fluctuating in the centre, which is filled with pus. This may have its origin in the follicular form, the pus becoming shut up in a follicle and gradually increasing until it bursts into the urethra, the bladder, the rectum, the peritoneum, or pelvic fascia and perineum. In other cases it becomes complicated by pyæmia and secondary abscesses. =Miliary Abscesses= may be comparatively few in number or generally diffused through the prostate, and are often the result of a pre-existing general infection. _Symptoms._ As the disease usually begins as a local infection the first symptoms are, as a rule, unattended by fever, which, however, appears in two or three days as the local lesions increase. The urine may be passed frequently in small amounts, or there may be frequent straining without passage of urine, the pressure of the swollen prostate, with or without spasm of the sphincter vescicæ, causing retention. It is no uncommon thing to find the last urine passed of a milky or glairy character and, coagula moulded in the prostatic canals may at times be found. The presence of spermatic crystals, fusiform, with very pointed extremities, and precipitated on the addition of ammonium phosphate, is characteristic of prostatic fluid, (Fürbringer). In other cases there is incontinence, the urine dribbling away involuntarily as the animal walks, and especially if anything occurs to excite him. Micturition may be painless or attended by acute suffering, which causes a sudden arrest of the flow. Defecation is attended with difficulty and more or less pain, and obstinate constipation is likely to set in. The animal is dull, spiritless and seeks to lie undisturbed. Pressure on the perineum is painful and exercise aggravates the symptoms. Rectal examination by the hand or finger according to the size of the animal, reveals the enlarged, tender prostate lying on the cervix vesicæ. This swelling may be unilateral but most commonly it is bilateral or general. When fever sets in with a temperature of 102°–104°, thirst, anorexia and weakness or stiffness in the hind parts may be noticed. In case of abscess, the urine may be perfectly clear until it bursts into the urethra or bladder when there is an abundant flow of pus, and rectal examination shows that the swelling and tension have notably diminished. Should it burst into the rectum, the pus shows in the fæces. Reinemann records a case in a bull with dysuria, œdema of the sheath and a swelling like the fist in the perineum, containing pus, and which communicated with the prostate and urethra. With the rupture of the abscess there is a marked amelioration of the symptoms.