168 DISEASES OF CATTLE. 



PLATK X Continued. 



form networks around the secreting tubules (11, 9). The urine and salts 

 pass from these vessels through the cells lining the tubules into the latter, 

 and are discharged as described above. The blood is again collected in veins 

 drawn black in the figure. 



Fig. 2. Illustrates the manner in which the blood is distributed in the glomeru- 

 lus /, and also to the secreting tubules (e). 



Fig. 3. Shows the relation between the blood vessel in the glomerulus (e) and 

 the tiibule which conducts the urine therein secreted from the blood vessel ; 

 (c) represents a glomerulus from which the urinary tubule has been removed. 

 PLATE XI: 



Fig. 1. Calculus or stone from the kidney. These are located in the pelvis or 

 portion of the ureter receiving the urine. The prolongations are casts of 

 the branches of the pelvis. See the plates of the kidney for further descrip- 

 tion. 



Fig. 2. Calculus made up of oxalate of lime magnified 215 times. 



Fig. 3. Phosphatic calculus containing a nucleus of uric acid, sawn through to 

 show concentric layers. 



Fig. 4. Straight forceps used in removing stones from the bladder. 



Fig. 5. Casts of the minute tubules of the kidney found in the urine in various 

 kinds of kidney disease. Highly magnified. 



