PARASITOLOGY. 225 



3. Place in the following solution permanently . 



Glycerine 4 cc 



Potassium Acetate 4 grams 



Water 40 cc 



Mix 



PREPARING SPECIMENS TO BE SENT TO 

 THE LABORATORY. 



1. Obtain specimens as fresh as possible. 



2. Wash clean in water. 



3. The specimen should now be placed in a four 

 percent formalin solution. The receptacle for the 

 specimen should be large enough so that it will not 

 be crushed in taking it out. 



TO STAIN ANY PROTOZOA IN THE 

 BLOOD CELL. 



1. Make smear by obtaining a drop of blood on a 

 slide then with another slide scrape off the excess. 

 This leaves a thin film. 



2. Air dry. 



3. Cover with Wright's stain. Leave for one or 

 two minutes. 



4. Add distilled water drop by drop and agitate 

 for two minutes. 



5. Wash with water until you leave the color you 

 desire. 



6. Air dry. 



7. Mount in Canada balsam. 



