CONTENTS. IX 



PART II.— SEA-ANEMONES. 

 CHAPTER I. 



Page 



Sudden enthusiasm for the Anemones — Imperfect state of our ktiowledge — 

 Literature of the subject — No distinction between animal and plant : 

 sensitiveness, locomotion, and capture of food — ^Voracity of the Anemone 

 — Its paralysing power denied — Habits and instincts — Is it viviparous 

 only? — Variations of colour, 121-151 



CHAPTER II. 



Desires for abundance — The thread-capsules : are they nettling organs ? — 

 Futility of observation uncontrolled by experiment — Structure of an 

 Anemone — General law of development — Development of the human 

 hand — Reproduction of Anemones — Their ovaries and spermatozoa — 

 Are Anemones of separate sexes, 152-184 



PAET III.— THE SCILLY ISLES. 



CHAPTER I. 



The lion that has eaten a man, and the zoologist who has been at the coast 

 — Troublesome desires — Choice of the Scilly Isles — Penzance lodgings — 

 The sail to Scilly : pursuit of knowledge under difficulties — First sight of 

 the islands — Tlieir area and population — Tlieir picturesqueness — The 

 changeableness of rocks — Antiquities of Scilly — The inhabitants — Primi- 

 tive state of the commerce — Dinner difficulties — How the ten thousand 

 saluted the sea — Love of the English for the sea — Homer — Our first day 

 on the rocks — The Nymphon Gracile — The Comatula — On observation 

 and experiment in biology — Do the Anemones digest ? — Meaning of di- 

 gestion — Assunilation and digestion — The Actinophrys — Food and blood 

 — Experiments on the Anemones — Food and knowledge, . . 187-232 



CHAPTER II. 



Druidical remains— A wreck ofi" Scilly— Geology and Zoology of the isles— 

 Efi"ect of light on plants and animals : history of its discovery — The Pipe- 

 fish and its incubation— Fish paradoxes— An aquarium— Suicide of the 

 Starfish — The pleurobranchus — Development of Eolis, Doris, and 

 Actseon— Shell and no shell— The Pedicellina : is it viviparous ?— The 

 Sagitta : a puzzle to zoologists — Where there is no respiration there will 

 be no circulation — The chylaqueous fluid of Anemones proved not to 

 exist— Earliest stage of a nutritive fluid— Function of the "convoluted 

 bands "—Delights of literature, 233-279 



