MAY 1905. 



(Published 1st May 1905.) 



No. 580. 



(No. 358 of current seriet.) 



MONTHLY ILLUSTRATED JOURNAL OF 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



T. SHEPPARD, F.Q.S., and T. W. WOODHEAD, F.L.S., 



Museum, Hull; Technical College, Huddersfield ; 



with the assistance as referees in special departments of 

 J. GILBERT BAKER, F.R.S., F.L.S., GEO. T. PORRITT, F.L.S., F.I 

 Prof. P. F. KENDALL, F.Q.S., JOHN W. TAYLOR, 



T. H. NELSON, M.B.O.U., . WILLIAM WEST, F.L.S. 



Contents : — pages. 



Notes and Comments (Illustrated):— Yorkshire Geology, Contorted Strata in Derby- 

 shire i2g-/ji 



The Making of Hast Yorkshire -rAowa,-? Sheppard, F.G.S i3i-'J9 



The Singing Time of Birds— fF. Gyngell ~ 140-151 



Pre-historic Remains in East Yorkshire ... iSJ-'SS 



Nature Study Conference at Keighley 155-157 



Field Notes 139, 151, 152^ 157 



Reviews and Book Notices (Illustrated) ... 157-159 



Northern News J59-160 



Illustrations 129, ijo, 159 



Plates v., VI., VIL, and VI!L 



LONDON : 



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