PHYSIOLOGICAL HALMATOLOGY. 



277 



smeared side up, to dry. When dry, examine with a 

 one-seventh objective. It requires considerable practice 

 and skill to make a good spread, although the operation 

 seems simple enough. In a good spread, the red cells 



FIG. 46. 

 FIG. 46. Touching the cover glass to the blood drop. 



FIG. 47. 



FIG. 47. Dropping cover 



glass upon the drop 



of blood. 



FIG. 48. 



FIG. 48. Showing manner of holding the 

 cover glass to jerk them apart. 



are evenly distributed, as in Fig. 37. In a poor spread, 

 the cells are clustered, and new spreads should be made 

 until the desired result is obtained. 



