ANALYTICAL INDEX 



TO VOL. I. OF 



THE POWERS OF THE CEEATOR, 



CHAPTER I.— ECHINODERMATA. 



PAGE 17 



Holothuria — difficulty of fixing its proper position in the Systema 



Naturw, ....... 18 



Ge.snerus' Icones Animalium, .... 19 



Specimen of the Scotica, hihcerens, and Phantapus, . . 20 



Holotburias dwell in the sea, .... ib. 



Their true nature cannot be discovered in a distempered state, . ib. 



1. Holothuria pentactes, . . . , . 21 

 General appearance of the Holothuria, . . . .22 



Holothuria pentactes, its size, members, &c., . . ib. 

 When detached generally float as long ovoids, . . .23 



Suckers can be wholly retracted and sunk in the flesh, . ib. 



Tentacula, in a quiescent state, retracted within the body, . 24 



Absorbs water copiously, ..... ib. 



Colour various, ...... ib. 



None recovered from the sea fit for immediate study, . 25 



Mr Henry Goadby's Lecture, . . . . . ib. 



Bohadsch, MUller, Tiedemann, Delle Chiaie, . . 26 



Holothuria pentactes dissected by Mr Goadby, . . . ib. 



Respiratorjj Tree — Mr Goadby, Dr Knox, ... 27 

 Naturalists do not agree as to the nervous system — Delle Chiaie, 



Professor Goodsir, . . . . .28 



Natural form and habits — Mr Daniel White M'CuUoch, . 29 

 Their safety depends on coolness, . . . .30 



Not so stationary as other species, .... ib. 



Tendency to rupture, ...... ib. 



Mr Adams, Sir Edward Belcher, .... 31 



Prolapse of the intestinal organs alike frequent, . , ib. 



Food not ascertained, ..... 32 



Extreme timidity of the Holothuria, . , . . ib. 



a 



