mie IRISH NATURALIST for 1920 (twelve parts^ will be sent to any Address 

 for 5s. Subscriptions should be sent to Messrs. Eason and Son, Ltd.: 40 Lower 

 Sackville Street, Dublin. 



THE NATURALIST. 



A Monthly Illuslraied Journal oj 



NATURAL HISTORY FOR THE NORTH OF ENGLAND. 



EDITED BY 



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

 The Museum. Hull . 



AND 



T. W. WOODHEAD, Ph.D., M,Sc., F.L.S.. Tfch. Coll.. 



HUDDFRSf'IFT.n. 

 WITH TnS ASSISTANCS AS RBFEREES IN SPECIAL DEPARTMENTS OF 



J. GILBERT BAKER, F.R.S., F.L.S., GSO T. PORRITT. F.L S., F.B.8. 

 PROF. P. F. KENr^ALL, W.Sc, F.G S., JOHN W. TAYLOR, M.Sc. 

 T. H. NELSON. M.Sc. M.B.O.U., RILEY FORTUNE, F.Z.S. 



This Journal is one of the oldest >'cientific Periodicals in the British Isles dating back to 1835. 



London- A. BROWN dc SONS. Ltd.. 5, FARRINCDON AVP.XUE, E.C. 

 Prepaid Subscriptioi\, 6/6 per annum, past free. 

 Communications to 6^ addressed to the Editors of the Nfiturali^t. The Museum, HulL 



NATURE. 



A weekly' illustrated journal of science. 



PRICE NINEPENCE. 



*• NATURE " contains Original Articles on all subjects coming within 

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

 off 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 ; Accounts of the 

 leading Scientific Serials ; Abstracts of the more valuable papers which 

 appear in foreign Journals ; Reports of the Proceedings of 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 2 0 Yearly • . . 2 6 9 



Half-yearly . ■ 119 Half- Yearly .. ... 13 3 



Quarterly ... ••. 0 11 3 Quarterly ... 0 12 0 



A char;;* of Sixpenre is made tor changing '•'rotch and Irish Che(iues. 



Cheques *ad Money Orders to be made payable to Macmh.lan & Co., Ltd., St. 

 Martin's-st., LON'JON. W.C.2. 



