90 



FIG. 9. Lateral view of encysted Lamblia duodenalis. 

 FIG. 10. Cyst from large intestine. 

 FIG. 11. Ventral view of Lamblia. 

 FIG. 12. Lateral view. 



FIG. 13. Epithelial cells of the villous coating of the small intestine infested with Lamblia. (After 

 Grassi & Schewiakoff, 1888, pi. 15, figs. 1, 2, 5, 11, 12.) 



