no ELEMENTS OF APPLIED MICROSCOPY. 



the ear by pricking with a sterile lance or glover's needle 

 after carefully washing the surface of the skin. A small 

 drop should be caught on the edge of a clean slide, which 



Fig. 43. — Urinary Sediment in Acute Bright's Disease. (Granu- 

 lar casts, leucocytes, and epithelial cells.) (After Ultzmann and 

 Hofmann.) 200 diameters. 



is then brought in contact with the surface of a second 

 clean slide. The upper glass is drawn along the lower one 

 at an acute angle so that the blood-drop escapes beneath 

 its edges and is spread over the lower slide in a thin 



