DISEASES OF THE TJRINABY OBGANS. 148 



Plate X— Continued. 



glomeruli (12) and also 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 glom- 

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



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

 the tubule which conducts the urine therein secreted from the blood ves- 

 sel; (c) represents a glomerulus from which the urinary tubule has been 

 removed. 

 Plate XL- 

 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 

 description. 



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. 



