PROTOZOA 



FORAMINIFERA. 



3. Polystomella. Examine (a) alive in watch-glass, to see the external protoplasm and the 



pseudopodia, (b) transferred to slide using the high power of the microscope. Then kill with osmic 



acid, decalcify in 5 p.c. acetic acid, stain with picrocarmine and mount permanently, to see nuclei 

 and cell-chambers. 



4. Shells of Foraminifera. Calcareous. 



