THE YORKSHIRE BOULDER COMMITTEE 

 AND ITS SEVENTEENTH YEAR'S WORK, 1902=1903. 



PERCY F. KENDALL, F.G.S.. Chairman, 



AND 



J. H. HOWARTH, F.G.S., Hon. Secretary. 



The Committee have this year to welcome a valuable addition 

 to their ranks of workers in the Thirsk Naturalists' Club, 

 which has organised a Sub-Committee to act in co-operation 

 with this Committee. The first results of its investigations 

 in the Vale of Mowbray are now presented. Mr. Kendall 

 visited Thirsk this year and identified many boulders which 

 will serve as types for the guidance of the local workers. 

 A more thorough search of this area has long been needed, 

 and the first report of the Thirsk Committee is interesting as 

 furnishing what the Boulder Committee have long looked for, 

 viz., evidence of the presence of rocks of Cheviot type in the 

 Vale of York. 



Commenting on the Thirsk records the British Association 

 report on erratic blocks says: — 'The observations made in 

 the Vale of Mowbray may be said to close up the last gap 

 in the network of observations which now extends over the 

 whole of the great county of York from the Tees, on the 

 north, to Sheffield, on the south, and from Ingleton, on the 

 west, to the sea. The thoroughness with which the search 

 for erratics has been made is very gratifying, yet the fact 

 that fresh types of erratics still continue to be recorded shows 

 that this well-worked field is far from being exhausted.' 



Professor Brogger has identified in a specimen found by 

 Messrs. Kendall and Muft' at Stonegate, in Eskdale, another 

 rock from the country around Christiania. 



A further interesting find is that of the trachyte and dolerite 

 of South-east Scotland by Mr. Kendall at Burstwick,'"^ illus- 

 trating the value of last year's excursion to the Tweed Valley. 



Much interest also attaches to the small boulder of Borrow- 

 dale Ash found by Mr. Gregory near Keighley at 950 O.D., 

 which supports a previous record from Thornton-in-Craven. 



Mr. Hemingway sends some valuable notes on the puzzling 

 drift-area about Barnsley, and our East Riding friends continue 

 with unabated zeal their invaluable work in their own area. 



"■' See 'The Naturalist,' March 1903, p. 71. 



1904 January i. 



