CONTENTS. 



March, 1824. 



Page- 



AuT. I. — ^n inquiry resjiecting the Trite Nature of Instinct ^ 

 and of the Mental Distinction between Brute Animals 

 and Man ; introductory to a Series of Essays, explana- 

 tory of the various faculties and actions of the former, 

 vohich have been considered to result from a degree of 

 Moral Feeling and of Intellect. By John Oliver 

 French, Esq 1 



A«T. II. — Monograj)h on the Cebrionidoe, a Family of In- 

 sects. By IV. E. LrEACH, M.D. F.R. Sf L.S. Sfc 33 



Atit. III.— On the situation and rank of Sponges in the 

 Scale of Nature, and on their internal Structure. By 

 Mr. John Edward GiiAY ••••.... 46 



Art. IV. — Description of a new Species of Emarginula. By 



Thomas Bell, Esq. F.L.S 52 



Aht. V. — Description of a new Species of Iridina. By Mr. 



G. B. SOWERB Y, F.L.S. 53 



Art. VI. — Some Observations on the Lamarckian Naiades, 

 and on the propriety of uniting them all under one 

 generic name. By the same 5^ 



Art. VII. — Descriptions, accompanied by Figures of several 

 Helices, discovered by T. E. BowBicn, Esq. at Porto 

 Santo 56 



AiiT. VIII. — Descriptions, accompanied by Figures, of 

 several New Species of Shells. By Mr. G. B. Soir- 

 ER B r, F.L.S 58 



Art. IX. — On Bulea. By Mr. John EofTARD Gray ... 61 



