CHAPTER VI. MAY. Floscularia cornuta--Euchlanis triquetra--Melicerta ringens--Its Powers as Brickmaker, Architect, and Mason--Mode of Viewing the Melicerta--Use of Glass Cell--Habits of Melicerta--Curious Attitudes--Leave their Tubes at Death--Carchesium--Epistylis--Their Elegant Tree Forms--A Parasytic Epistylis like the "Old Man of the Sea"--Halteria and its Leaps--Aspidisca lynceus CHAPTER VII. JUNE AND JULY. Lindia torulosa--OEcistes crystallinus--A Professor of Deportment on Stilts--Philodina--Changes of Form and Habits--Structure of Gizzard in Philodina Family--Mr. Gosse's Description--Motions of Rotifers--Indications of a Will--Remarks on the Motions of Lower Creatures--Various Theories--Possibility of Reason--Reflex Actions--Brain of Insects--Consensual Actions--Applications of Physiological Reasoning to the Movements of Rotifers and Animalcules CHAPTER VIII. AUGUST. Mud Coloured by Worms--Their Retreat at Alarm--A Country Duck-Pond--Contents of its Scum--Cryptomonads--Their Means of Locomotion--A Triarthra (Three-limbed Rotifer)--The Brachion or Pitcher Rotifer--Its Striking Form--Enormous Gizzard--Ciliary Motion inside this Creature--Large Eye and Brain--Powerful Tail--Its Functions--Eggs CHAPTER IX. SEPTEMBER. Microscopic Value of Little Pools--Curious Facts in Appearance and Disappearance of Animalcules and Rotifers--Mode of Preserving them in a Glass Jar--Fragments of Melicerta Tube--Peculiar Shape of Pellets--Amphileptus--Scaridium longicaudum--A Long-tailed Rotifer--Stephanoceros Eichornii--A Splendid Rotifer--Its Gelatinous Bottle--Its Crown of Tentacles--Retreats on Alarm--Illumination Requisite to see its Beauties--Its Greediness--Richly-coloured Food--Nervous Ganglia 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 Vaginicolæ--Changes of Shape--A Bubble-blowing Vorticella CHAPTER XI. NOVEMBER.