77 
Explanation  of  Plate  19. 
Fig.  1  -  Large  form  of  Entamoeba  ser- 
pentis  with  an  annular  zone  of 
fine  chromatin  granules  at  the 
edge  of  the  nucleus. 
Fig.  2  — Intermediary  form  between  the 
larger  and  smaller  ones,  showing 
a  chromatin  ring,  due  to  fusion 
of  expelled  granules. 
Fig.  3  — Nucleus  with  granulations,  due 
to  fusion. 
Fig.  4  &  5 -Formation  of  masses,  due 
to  the  fusion  of  chromatin  gra¬ 
nules. 
Fig.  6,  7  &  8  — Nuclei  of  large  forms 
showing  a  network  in  the  liquid 
zone. 
Fig.  9  &  10  — Nuclei  with  desaggregating 
chromatic  granulations. 
Fig.  11  &  12  — Small  forms  with  big  ca- 
ryosomes  and  very  large  chro¬ 
matic  masses  at  the  periphery. 
