OF THE ALIMENTARY TRACT 43 



forms are seen, report it so and ask for continued 

 examination for cysts. 



3. When not positive of the identification of an 

 amoeba, either motile or cyst, or when none is found 

 where it is judged it should be, make slide prepara- 

 tions, at least twelve, according to the instructions 

 of steps one, two, three, and up to the 90-95% alco- 

 hol of step four in the iron-haematoxylon staining 

 technique previously given. Then seal in a con- 

 tainer of alcohol and send to a recognized protozoolo- 

 gist for completion of the stain and search for and 

 identification of the amoeba. 



Where facilities and personnel of medical labora- 

 tories is sufficient the more elaborate procedures 

 should be appropriately carried through. 



