VOL. V. 



PART IV. 



TRANSACTIONS 



JlBirrosropiral jSoriFfg 



SESSION 1906-1006 



CONTENTS. 



PAOK 



I. A Contribution to tha Hydrachnid Fauna of Scotland. — Mr W. 



Williamson .339 



II. Some Features of Interest in Scottish Mountain Plants (icith Four 



Plates).— VLi D. S. Fish 242 



III. The Great Gulf: An Interesting Point in Evolution. — Mr J. J. 



Macdonald, 258 



IV. Some of the Rarer Plants of the Gorebridge District.— Rev. D. W. 



Wilson, M.A 264 



V. The "Water-Flea" Scare in our City.— Mr J. Lindsay, .267 



VI. A Trip to the Island of Hoy.— Mr Tom Speedy 276 



VII. A Field Naturalist's Ramble in South Africa.— Mr W. C. Crawford, 



F.R.S.E 286 



VIII. Notes on the Formation and Flora of a Shingle Island in the River 



Orchy, Dalmally, Argyll (with Three Afop*).- Miss Beatrice Sprague, 290 



IX. Report of the Microscopical Section.— Mr W. C. Crawford, F.R.S.E., 316 



Exhibits in Natural History 318 



Address by the President, Mr James Russell— (w*</i Three Plates), . 319 



Annual Business Meeting 834 



List of Members, 1906-1906 xiiii 



^ubligfjelJ for tf)e SJocietg 



BY 



WILLIAM BLACKWOOD & SONS 



^ MCMVI '^ 



Price to Noiv-Members, Four Shillings. 



