CONTENTS. With references to the subjects of their respective communications. Page. Letter addressed to the Editor, on the subject of the French Edition of Sowerby's Mineral Conchology of Great Britain - 356 ALEXANDER, HENRY, F.G.Š. &c. On the discovery of the teeth of the Mastodon, in the Crag 466 ALEXANDER, SIR JAMES Letter in reply to the Review of his African Expedition of Dis- covery. ANNING, MARY. Note on the supposed frontal spine in the genus Hybodus. Monograph of the species of the Genus Sciurus, inhabiting - An Account of the Strata of Lincoln, from a recent Survey, On the application of Heliographic or Photogenic Drawing to On the derivation of the name Adder, as applied to the Viper 566 Analytic Descriptions of the Groups of Birds belonging to the Remarks on the Fieldfare breeding in the British Islands BIRCH, SAMUEL. On the Monkeys known to the Chinese **BOWERBANK, J. S., F.G.S., &c. Ventriculite containing a Cidaris, from the Chalk. BRADLEY, THOMAS. 76 - 467 Information relating to the Gymnotus electricus in the Adelaide BROWN, JOHN, F.G.S. Experiment as to the capability of the Toad existing without Observations on some of the Natural Objects in the neighbour- CHARLESWORTH, EDWARD, F.G.S., &c. On the fossil remains of an apparently new species of Hybodus On a specimen of the lower jaw of the Mammoth procured from On a tooth of the Genus Otodus, from the London clay, in the 242 347 On a fossil Zoophyte from the Kentish Chalk, enclosing a Ci- On the discovery of a portion of an Opossum's jaw in the Lon- On some fossil teeth of the genus Lamna CLARKE, W. BARNARD, M.D. Remarks on the Red-legged Partridge (Perdix rubra, Briss.) 142 Illustrations of the Geology of the South East of Dorsetshire CLARKE, JOSEPH. 390,432, 483 Remarks on some of the rarer Birds captured near Saffron On the occurrence of the young of the Crossbill, at Saffron - On the disappearance of the Mus messorius. **COLCHESTER, W ILLIAM. Fragment of a Jaw of the supposed extinct Didelphis. Notice of the discovery of a specimen of Achatina acicula in - Directions for collecting and preparing land and fresh-water COUCH, JONATHAN, F.L.S., &c. 565 - 602 - 312 Note relating to the distribution of the Marsupialia COWARD, CHARLES. On a carnivorous habit in the common Squirrel Cox, J. C., F.Z.S., &c. Note relating to the Argonaut CUMING, H. Extract from a letter to the Editor 311 - 420 DAVIS, A. H. On a singular procession of Caterpillars, observed at Adelaide, List of the Entomological Writings of Thomas Say DRUMMOND, JAMES L., M.Ď. Observations on Echinorhynchus hystrix and Ech. filicollis - On Fossil Infusoria found in the County Down, Ireland Record of the capture of an Eagle (Falco albicilla) at Swaffham 198 A Catalogue of some of the most interesting Plants collected GARNER, ROBERT, F.L.S. On the Anatomy of the Lamellibranchiate Conchiferous Ani- mals GILL, THOMAS. - On some improvements in the Microscope Extract of a letter addressed to Mr. Prince Jaws and Spine of Hybodus Delabechei. On the Classifications of the Amphibia HOPE, REV. F. W., F.R.S., &c. - 561 Observations on the Lamellicorns of Olivier On the Fossil Shells of the genus Modiola, being frequently found in the Bath Oolite, inclosed in the Shells of the genus Notice of Undescribed Zoophytes from the Yorkshire Chalk 10 Note on the fossil from Marychurch, figured in the Geological Notice of the discovery of the Nest and Eggs of the Crossbill, MITCHELL, JAMES. Notice of Fossils found at Stratford, in the cuttings for the - 520 MOORE, EDWARD, M.D., F.L.S. On the destruction of Kyanised Wood in Plymouth Harbour, - 196 Catalogue of the Malacostracous Crustacea of South Devon - 284 A Systematic Catalogue of the Fossil Plants of Britain On the Synonymy of the Ferlites, together with brief characters of the old, and of a few new Species Description of a new species of Lamia, from Congo, in the Bri- Notes on Irish Natural History, more especially Ferns Description of the Frontal Spine of a second species of Hybodus, Description of the jaw of the fossil Macacus from Woodbridge. 445 Remarks on the Botany of Selborne PATTERSON, ROBERT. On some Snow Crystals observed on the 14th of January, 1838 107 On the structural differences observable in the Crania of the PHILLIPS, JOHN, F.R.S., (Professor.) Biographical Notices of William Smith, L.L.D. RICHARDSON, WILLIAM, F.G.S., &c. Notice respecting the discovery of the fossil remains of Cetacea Notice of the early appearance of the common Bat, (Vespertilio Rare and interesting Plants about Kirtlington, Oxfordshire SHUCKARD, W. E., V.P.E.Š., &c. Notes on the Pensile Nests of British Wasps **SIDMOUTH, VISCOUNTESS. Tooth of the genus Otodus, Agass. SOWERBY, JAS. DE C. Letter relating to the French Edition of the Mineral Conchology 418 Upon the claims of the Ardea alba-Great Egret, or White |