UKINE. 



215 



Fig. 122. 



Their form is changed by the action of the fluid in which they are 

 found, they most frequently resembling transparent rings. (Fig. 122.) 



4. The casts of the tubuli uriniferi are bot- 

 tle-shaped or cylindrical in form, and resem- 

 ble fine hairs. They are from less than T J^ 

 to 5*3 inch long, and J^-Q inch in diameter; 

 and present three varieties: 1. Those consist- 

 ing of the epithelial coat alone of the urini- 

 ferous tubes. These are observed in the com- 

 mencement of Bright's disease, and in the 

 desqu amative stage of erysipelas and scarla- 

 tina. 2. Those consisting of recent exuda- 

 tion; generally granular, and containing more 

 or less blood and pus-corpuscles. 3. Those 

 consisting of pure coagulated fibrin ; resem- 

 bling hyaline tubes, and often hard to recognize on account of 

 their transparency. 1 



5. Fibrinous casts and cells, containing fat-globules, are found in 

 Blight's disease. Figs. 123, 124, and 379 represent these casts and 

 cells. 



Colored blood-corpuscles in 

 urine. 



Fig. 123. 



Fig. 124. 



V 



Fibrinous cast of uriniferous tube. 



Fibrinous cast containing epithelium and fat-globules, 

 a. Cells containing fat drops. 6. A fibrinous cast. 



6. The large organic globules (Fig. 125), are not unfrequently met 

 with in the urine of pregnant women. They appear to be merely 



Fig. 125. 



Fig. 126. 





o 

 o c o 



o 



Large organic globules (400 diameters). 



Small organic globules. 



1 Dr. J. H. Bennet adds, the " waxy casts" the detached basement-membrane 

 alone of the tubes. 



