IV CONTENTS. 



PAGE. 



XII. Notice on the Gravel Bed of St. Lawrence Colliery, by Matthias 



Dunn, 285 



XIV. On the Quadrupeds and Birds inhabiting the County of Sutherland, 

 observed there during an Excursion in the Summer of the Year 

 1834, by P. J. Selby, V. P., F. B. S. E., F. L. S., 8,-c, fyc, ... 288 



XV. Observations on the Young of Salmon, and some Bemarhs on the 



Migration of Eels, by The Hon. H. T. Liddell, M. P., V. P.,... 304 



XVI. On making the Society a Place of Deposit for the Mining Becords 



of the District, by John Buddie, V. P., F. G. S., fyc, 309 



XVII. Supplement to a Catalogue of the Land and Fresh-water Testa- 

 ceous Mollusca, found in the Vicinity of Neivcastle, by Joshua 

 Alder, 337 



XVIII. On the Effects produced by a Greenstone Dyhe upon the Coal, 

 in passing over Cockfield Fell, in the County of Durham, by 

 Henry T. M. Witham, V. P., F. G. S., 6,-c, 343 



XIX. Narrative of the Explosion which occurred at Wallsend Colliery 



on the 18th of June, 1835, by John Buddie, V. P., F. G. S., Sfc, 346 



XX. Chemical Examination of the Fire Damp from the Coal Mines 



near Newcastle, by Edward Turner, M. D., F. B. S., Lond. and 

 Edinb., V. P. G. S., Professor of Chemistry in the University of 

 London, 384 



XXI. Description and Analysis of ' Hatchetine, found in XJrpeth Colliery, 



near Newcastle, by James F. W. Johnston, A . M., F. B. S., 

 Lond. and Edinb., F. G. S., 8fc, 394 



XXII. Besearches upon the Composition of Coal, by Thos. Richardson, 401 



List of Presents, from August, 1831, to December, 1837, 414 



Explanation of the Plates, 433 



ADVERTISEMENT. 



The Committee, in their capacity of Editors of the Transactions of the 

 Natural History Society, beg to make known to the public, that the authors 

 alone are responsible for the facts and opinions contained in their respective 

 papers. 



