Tne IRISH NATURALIST for 1922 (twelve parts) will be sent to any Address 

 iOT lUs. Subscriptions sHouId be sent to Messrs. Eason and Son, Ltd., 40 Lower 

 Saekville Street, Dublin. Single Copies, Is. each. v 



NATURE. 



A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 

 PRICE ONE SHILLING. 



" NATURE " Goniains Orlgi'nail Articles (in all subjects coming within 

 the domain of Science, contributed by the most eminent scientific writers 

 of the day. It also contains Reviews of all recent scientific works ; 

 Correspondence Columns, which form a medium of scientific discussion 

 and of Intercommunication among men of Science ; Reports of the 

 Proceedings oi the Principal Scientific SAcieties and Academies of the 

 World ; and Notes on all matters of current scientific interest 



SUBSCRIPTIONS TO "NATURE." 



£ 8. d. (To all places Abroad) £ s. d 



Yearly 2 12 0 Yearly 2 17 0 



Half-yearly ... 16 0 Half-Yearly ... ... 1 10 0 



Quarterly ... ... 0 13 0 Quarterly ... ... 0 16 0 



^••i^* A charj^e of Sixpence is made for changing Scotch and Irish Cheques. 



Cheques and Money Orders to be made payable to Macmillan & Co., Ltd.. St 

 Martin' s-ST., London, W.C.2. 



THE NATURALIST. 



A Monthly Illustrated Journal of 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



T. SHEPPARD. M.Sc, F.G.S.. F.R.G.S.. F.S.A., Scot., 

 The Museum, Hull , 



AND 



T. W. WOOPHEAI), Ph.D.. M.Sc, F.L.S., Tech. Coll., 



HUDDERSriELD. 

 WITH THB ASSISTANCE AS RBFEREBS IN SPECIAL DEPARTMENTS aF 



€tEO. T. PORRITT, F.L.8., F.E.S. RILEY FORTUNE, FJ[.S. 



JOHN W. TAYLOR, M.Sc. 



1 liis Joiirml is one nf rh»- fddest <ci<Mitiri(: Porioilicils in the liritish Isles d.iling back to 1833. 



London : A. BROWN & SONS. Ltd.. 5. FARRINGDON AVLNUE. E C. 

 Prepaid Subscription, 10/6 per annum, post free. 

 Communications to be addressed to the Editors o! the Naturalist. The Museum. Hul . 



