8 Proceedings of the 



was of opinion that the length was merely due to a track made by a worm 

 of about six inches long, in mud of a rather crisp than slimy condition ; 

 and that the different appearances presented by the track, as compared 

 with the surrounding matter, was due, not to the remains of the worm, 

 but to dry dust blown into the track by the wind, on the recession of the 

 ocean, which formed the lowest Silurian beds of Scotland. On the tracks 

 found by Mr Bryson in the Llandeilo flags of Wales, he observed that 

 many naturalists had mistaken for setse merely the effects caused by wind 

 blowing light sand over tracks made by gasteropodous molluscs ; and stated, 

 that tracks which he found at Port Rheudyn, in Wales, in almost the 

 lowest beds of the Silurian slates, were quite identical with those he saw 

 in the act of formation by the common Turbo littoreus, on the sands of 

 Tremadock, a few miles south of Port Rheudyn. Mr Bryson exhibited 

 some very large slabs, showing numbers of these tracks, sent him by 

 the kindness of Mr Chaffers, the lessee of the quarry at Port Rheudyn, 

 Wales. 



The following gentlemen were appointed the office-bearers for the 

 session : — - 



Presidents. — Rev. John Fleming, D.D., Professor of Natural Science, 

 New College, Edinburgh; Robert Chambers, Esq. ; William H.Lowe, 

 M.D. 



Council. — Andrew Murray, Esq., W.S. ; John Coldstream, M.D. ; 

 Patrick Dalmahoy, Esq. W.S. ; J. H. Balfour, M.D., Professor of Botany, 

 University of Edinburgh ; Hugh Miller, Esq. ; Robert K. Greville, 

 LL.D. 



Secretary.— r John Alexander Smith, M.D. 



Assistant- Secretary j — George Lawson, Esq. 



Treasurer. — William Oliphant, Esq. 



Honorary Librarian. — Robert F. Logan, Esq. 



Library Committee. — Wm. Rhind, Esq. ; John L. Stewart, Esq. ; 

 Alexander Bryson, Esq. 



Alexander Rose, Esq., Lecturer on Geology and Mineralogy, Edin- 

 burgh, and David Page, Esq., were then elected members of the Society. 



, January 24, 1855. — William H. Lowe, M.D., President, 

 in the Chair. 



The following Donations were laid on the table, and the thanks of the 

 Society voted to the donors : — . 



1. Proceedings of the Literary and Philosophical Society of Liverpool. 

 Vol. viii. 1853-4. From the Society. 2. (1.) Inaugural Address at the 

 Opening of the Medical Society's New Hall, 1852. (2.) Observations on 

 the Canal of Petit. (3.) On the Embryogeny of Orchis mascula. (4.) 

 On the Anatomy of Actinia. (5.) On the Anatomy of the Giraffe. (6.) 



