CHAPTER X.

OCTOBER.

Stentors and Stephanoceri--Description of Stentors--Mode of viewing them--Their Abundance--Social Habits--Solitary Stentors living in Gelatinous Caves--Propagation by Divers Modes--Cephalosiphon limnias--A Group of Vaginicolae--Changes of Shape--A Bubble-blowing Vorticella