CONTENTS. 



SESSION CXII. 



IT 

 If 



PAQK 



Opening Address, by Uamsay H. Traquair, Esq., M.D., . . 225 



On a New Nomatoid Worm, by Frank E. Beddard, Esq., M.A.Oxon., 



F.R.S.E. [Plate IV.], 229 



On Sjjhenopter is crassa (Lindley and Hutton), by Robert Kidston, Esq., 



F.G.S. [PlateV.], 235 



On the Introduction of Ileeves's Pheasant into Scottish Game Preserves, by 



Robert Gray, Esq., ....... 239 



Note on the Occurrence of LithoUns variegatus (Leach) in Scotland, by 



T. D. Gibson-Carmichael, Esq., ..... 240 



On the Occurrence of the Pectoral Sandpiper (Tringa maculata, Vieill.) at 



Loch Lomond, by Robert Gray, Esq. , . . . . . 240 



On the Stockdove {Columha csnas), with Remarks upon its Extension of 



Range in Great Britain, by J. A. Harvie-Brown, Esq., . . 241 



Notes on some Ethnographical Specimens brought from the Nicobar Islands 

 by Colonel Cadell, V.C., Chief Commissioner of the Andaman and 

 Nicobar Islands, by A. Galletly, Esq. , . . . . 255 



Obituary Notice of Sir C. Wyville Thomson, LL.D., F.R.S., by George 



Leslie, Esq., M.B., CM., . . . . . . 258 



River-Terracing: Its Methods and their Results, by Hugh Miller, Esq., 



A. R. S. M., F.G.S., of H.M. Geological Survey, . . . .263 



Additional Notes on the Algse of the Firth of Forth, by George Wm. 



Traill, Esq. [Communicated by Professor Duns], . . . 306 



On the Glaciated Summit of Allermuir, Pentlands, by James Bennie, Esq., 



of the Geological Survey of Scotland, ..... 307 



On the Occurrence of Selenium in Commercial Sulphuric Acid, and its 



Action on Mineral Hydro-Carbon Oils, by James C. Hamilton, Esq., . 313 

 n a New Species of Octopus (0. maculosus), by W. E. Hoyle, Esq., M.A. 

 (Oxon.), M.R.C.S., F.R.S.E., Naturalist to the ** Challenger" Com- 

 mission. [Communicated by F. E. Beddard, Esq., M.A. (Oxon.), 

 F.R.S.E.] [Plate VL], 319 



,0n the Discovery of Late Glacial Implements in the Rhinns of Galloway, by 

 William Gemmill, Esq., M.B., CM. [Communicated by A. Mac- 

 connochie, Esq.], ...*,.. 322 



Note on the Great Variety of Colour in the Eggs of the Black-headed Gull 

 {Lanes ridibundus, L.), by John Alex. Smith, Esq., M.D. [Specimens 

 exhibited], ........ 333 



On a hitherto Unrecorded Specimen of the Great Auk {Alcu impennis, L.) in 

 the Collection of His Grace the Duke of Roxburghe. By John Gibson, 

 Esq. [Specimen exhibited], ...... 335 



Water Supply of Villages, by John Hunter, Esq., F.C.S., . . . 338 



On the Occurrence of Pterygotus and a Limuloid in the Caithness Flagstones, 

 and on the Nature and ]\lode of Formation of "Adam's Plates," by B, 

 N. Peach, Esq., A.R.S.M., F.R.S.E., of the Geological Survey of 

 Scotland. [Plate VII], . . . . . . . 343 



