LIST OF ILLUSTRATIONS 



1. SIMPLER FORMS OF PROTISTA 15 



2. SOME OP THE MORE COMPLEX PROTOZOA 16 



S. STRUCTURE OF ONE OF THE MOST COMPLEX OF THE PROTOZOA . 17 



4. DIVISION OF AN INFUSORIAN, PARAMECIUM 20 



5. DIAGRAM OF THE DESCENT OF GENERATIONS IN PROTOZOA . . 21 



6. CONJUGATION OF PARAMECIUM 22 



7. DIAGRAM OF THE PROCESS OF DIVISION IN PARAMECIUM ... 25 



8. DIAGRAM OF THE INTERNAL PROCESSES IN THE CONJUGATION OF 

 PARAMECIUM CAUDATUM 26 



9. DIAGRAM SHOWING WHAT OCCURS IN ENDOMIXIS 31 



10. REPRODUCTION IN AMCKBA 89 



11. REPRODUCTION IN DIFFLUGIA 40 



12. Two PARENTS, WITH THEIB OFFSPRING, JUST BEFORE SEPARATION 



IN DIFFLUGIA CORONA 41 



13. REPRODUCTION IN STYLONTCHIA 43 



14. INHERITANCE FROM MUTILATED PARENTS, IN DIFFLUGIA CORONA 45 



15. REPRODUCTION IN AN INFUSORIAN (PARAMECIUM) IN WHICH THE 

 ANTERIOR END HAS BEEN CUT OFF . 46 



16. REPRODUCTION FOR SEVERAL GENERATIONS OF A PARAMECIUM . 47 



17. REPRODUCTION IN A PARAMECIUM BEARING A SMALL ABNORMAL 

 PROJECTION NEAR THE POSTERIOR END 47 



18. REPRODUCTION IN A DEFORMED INDIVIDUAL OF PARAMECIUM . 48 



19. DIFFLUGIA CORONA 51 



20a. DIFFLUGIA CORONA 52 



20b. DIFFLUGIA CORONA 53 



21. DIFFLUGIA CORONA; PORTIONS OF FOUR FAMILIES 55 



22. EIGHT DIVERSE FAMILIES OF PARAMECIUM, SHOWING VARIATIONS 57 



23. DIFFLUGIA CORONA, TO SHOW THE CHARACTERS STUDIED IN THE 

 NEW WORK ON INHERITANCE 71 



7 



