-7 



FIG. 29. A section from the region of the mouth of Paramecium showing 

 the formation of a food vacuole. En., endosarc ; Ma., macronucleus ; 

 Mb., undulating membrane ; Mu., mouth ; N., food vacuole ; Ne., food 

 vacuole forming ; S., gullet. (From Maier in Archiv f. Protist.) 



FIG. 30. Binary fission of Paramecium aurelia. i, 3, 4, 5, contractile vacu- 

 oles ; 2, 6, dividing macronucleus ; 7, 9, gullet ; 8, 10, dividing micro- 

 nuclei. (From Lang's Lehrbuch.) 



