xviii 



CONTENTS. 



PAGE 



VII. Logan (George), Esq., Report of the Committee on Marine 



Zoology. (Specimens were exhibited), . . 442 



VIII. Thomson (Murray), M.D., and Binney (Mord), Esq., On 



the Composition of a Pseudo-Steatite, . . . 445 



IX. Brown (Robert), Esq., Exhibited a small Foetal Specimen 



of a Narwal, ...... 447 



LIST OF ILLUSTRATIONS. 



PAGE 



Plate XIII. — Anatomy of Sacculina, .... 306 

 Plate XIV. — 1-4, Hydractinia areolata ; 5-7, Atractylis are- 



nosa, . _ . . . . . 314 



Plate XV. — 1-6, jEquoria vitrina, . . . .316 



,, ,, 7-10, Atractylis arenosa, miniata, Laomedea deci- 



piens, . . . . . .- 349 



Plate XVI.— New Form of Holothuria, . . .331 



Plate XVII. — 7, 8, Acharadria larynx, .... 378 



,, ,, 1-6, Vorticlava Proteus, .... 439 



Plate XVIII. — Zooteirea religata, .... 378 



Plate XIX. — 1, Zooteirea religata; 2, 3, Freya producta ; 



4, F. obstetrica ; 5, 6, F. stylifer ; 7, 8, Oxy- 



tricha longicaudata, .... 381 

 Plate XX. — Ophiocoma bellis, 0. granulata, . . . 382 



Plate XXI. — Meteoric Iron, from Roxburghshire, . . 396 



Plate XXII. — Trichydra pudica, . . . . 440 



Electro-cuts — Impression of Etched Surface of the Meteoric Iron, 405 

 „ Impressions of Etched portions of the Meteoric Iron, 413 



Woodcut — Section of Sand-pit, Junction Road, Leith, . . 422 



