DISEASES OF THE URINARY ORGANS. 



DESCRIPTION OF PLATES. 



Plate IX: 



Fig. 1. Kidney of the ox. Talven from Handbuch drs Vcrglcwhenden 

 Anatomde des Haus Sdugethiere, vol. 7, 1890: A, rennl artery carry- 

 ing blood into tlie liidney ; V, renal vein carrying blood from the 

 kidney back to the heart ; H, ureter, the tube carrying the urine from 

 kidney to bladder. It is formed by the union of a number of branches 

 which begin as cups (calices), each inclosing the tip of a conical mass 

 of tissue from which the urine exudes. 1, Showing such papilla through 

 the cup. or calyx, surrounding it : 2, papilhe with the cups inclosing 

 them cut in half to show their relation to each other. 



Fig. 2. The male genital organs of the ox. Taken from Leisering, Mueller 

 & Ellenberger, Handhiicli des Verg. Aiiat. des JIaus Sdugethiere: 1, 

 scrotum, or the pouch containing the testicles; 2, tunica vaginalis, 

 the serous membrane enveloping the testicles; 3', right testicle, outer 

 view ; 3', left testicle, inner view ; 4, epididymis, or the beginning of 

 the excretory canal of the testicle; 4', globus major, or the head of 

 the epididymis; 4", globus minor, or the tail of the epididymis; 5, 

 vas deferens, the duct through which the seminal fluid reaches the 

 ejaculatory ducts; 5', pelvic dilatation of the vas defei-ens; 6, vesic- 

 ula seminalis. The vesicuhe seminals are two oval pouches, which, 

 in addition to their own secretions, receive the semon conveyed by 

 the seminal ducts and bold it in reserve until copulation; 7, mem- 

 branous or intrapelvic portion of the urethal canal covered by Wil- 

 son's muscle; 8, part of the prostate gland, covered by Wilson's 

 muscle; 9, Cowper's gland. This gland, like the prostate gland, 

 secretes a fluid which is thrown into the urethal canal in abundance 

 immediately before ejaculation ; the expulsion of the semen is by 

 this means facilitated ; 10, ejaculator seminis, or accelerator urine 

 muscle; 11, penis; 11', cut portion of same; 12, cut suspensory liga- 

 ments of penis; 13, sheath, or prepuce laid open; 14, retractor muscles 

 of sheath ; 15, cremaster muscle cut at superior extremity ; 16, dupli- 

 cature of peritoneum ; 17, ureters carrying urine from the kidneys 

 to the bladder. 

 Plate X: 



Fig. 1. In this figure the minute apparatus for the secretion, collection, 

 and discharge of the urine into the pelvis of the kidney (see preced- 

 ing plate) is shown. The course is as follows : The urine is secreted 

 from the blood vessels in the little round bodies called glomeruli (12), 

 and by the minute cells in the curved tubes (11, 9. 10. 8). and passes 

 through the convolutetl and straight tubes (7, 6) into the larger tube 

 (1), and then out into the pelvis, thence through the ureters into the 

 bladder. The fluid and salts dissolved in the urine are taken from 

 the blood, and the minute blood vessels are therefore very abundant 

 16923°— 12 10 145 



