INDEX, 518 



Page, 



F 



Feathers, nutrition of, - - 272 



Felis, description of a New Species of, by Thomas Stewart 



Traill, M. D., 170. — Its dimensions, 172. 

 Flame, the power of, diminished by velocity, - 505 



Experiments on the nature of. - 510 



Fleming, Rev. Dr John, on the Mineralogy of the Neigh- 

 bourhood of Cork, - S3 



— on the Water-Rail, - 174 



. his description of the British Spe- 

 cies of Beroe, - - 400 

 Flora, Arctic, some account of, : - - 416 

 Fontinalis squamosa, remarkable smell of, - 366 

 Forms, primitive of Crystals, connected with the number 



of their axes of double refraction, - 52 



Form, absolute, of Coal-fields in Great Britain, with excep- 

 tions, - - - 141 

 Fossil Skeleton, account of a, - - 450 

 Fowls, domestic, age of, - - 205 



— — change of plumage in the female, in age, 1 84 



Frog, common, physiological notice concerning the early 

 state of, by James Wilson, Esq., 458. — The young 

 tadpoles supposed to be nourished by the gela- 

 tinous mass in which they were inclosed, even 

 after their exclusion, 458. — Umbilical cord pro- 

 ceeding from each globule, and attached to the 

 belly of the tadpole, 459- — Duration of the tad- 

 pole state, 462. — Fore legs protruded, in a per- 

 fect state, from the sac in which they are formed. 

 — Progress of the tadpole to maturity, 463, 



Fucus, description of a New Species of, by Robert Kaye 



Greville, Esq. - - 396 



laciniatus, found to possess two modes of fructifi- 

 cation, - - s6s 



— nypogfbssum, found in winter as well as summer, $67 



