PARASITOLOGY. 223 
3. Place in the following solution permanently : 
Glycerine: en See 4 cc 
Potassium Acetate________ 4 grams 
Wate tie oc ocecee Se 2S ase 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. 
