304 INDEX. 



A short Account of an Excursion through the Subterraneous Cavern at 

 Paris. By Mr. Thomas White, Member of the Royal Medical Society of 

 Edinburgh, &c. In a Letter to his Father. II. 377. 



A Description of the Eye of the Seal. By Mr, Hey, of Leeds. III. 274. 



Remarks on the Summer Birds of Passage, and on Migration in General. 

 By Mr. John Gough. Communicated by Dr. Holme. II. (Second Series) 403. 



Account of the Floating Island in Derwent Lake, Keswick. By Mr. Jona- 

 than Otley. In a Letter to Mr. Dalton. III. (Second Series) 64. 



Observations conducive to a more complete History of the Cuckoo. By 

 Mr. John Blackwall. IV. (Second Series) 441. 



Observations on the Notes of Birds, including an Inquiry whether or not 

 they are Instinctive. By Mr. John Blackwall. IV. (Second Series) 289. 



Tables of the various Species of Periodical Birds observed in the neigh- 

 bourhood of Manchester ; with a few Remarks tending to establish the opinion 

 that the Periodical Birds Migrate. By Mr. John Blackwall, IV. (Second 

 Series') 125. 



Remarks on " An Account of a Floating Island at Newberry-port, by Mr. 

 Amos Pettingall." (See Brewster's Journal, July, 1827; or Dr. Silliman's 

 Journal, No. 25.) By Mr. Jonathan Otley. V. (Second Series) 226. 



Notices, chiefly Botanical, respecting the Natural History of Llandudno 

 Parish, Caernarvonshire. By William Thomson, A.M. V. (Second Series) 165. 



Remarks on the Study of Entomology, and on an Hymenopterous Insect, 

 which devours the leaves of the Gooseberry bush. By John Moore, Esq., F.L.S. 

 V. r Second Series) 112. 



Further Observations on the Floating Island of Derwent Lake ; (Memoirs, 

 vol. 3rd, New Series, page 64) with Remarks on certain other Phenomena. In 

 a Letter to Mr. Dalton, F.R. S., President of the Society. By Mr. Jonathan 

 Otley. V. (Second Series) 19. 



On the Instincts of Birds. By John Blackwall, F.L.S. V. j( Second 

 Series) 254. 



On some of the Microscopical Objects found in the Mud of the Levant, and 

 other Deposits ; with Remarks on the mode of formation of Calcareous and 

 Infusorial Siliceous Rocks. By W. C. Williamson, Esq. Communicated by 

 J. P. Joule, Esq. VIII. (Second Series) 1. 



On the Structure and Affinities of the Plants hitherto known as Stern - 

 bergiae. By William Crawford Williamson, Professor of Natural History in 

 Owens College, Manchester. IX. (Second Series) 340. 



On the Volvox Globator. By William Crawford Williamson, Professor of 

 Natural History in Owens College, Manchester. IX. Second Series) 321. 



PHYSICAL SCIENCE. 

 An Essay on the Ascent of Vapour. By Alexander Eason, M.D. I. 395. 



