The IRISH NATTTRy^LIST for 1923 (twelve partff) will be sent to any Address 

 for IDs. Subscriptions sbould be sent to Messrs. Eason and Son Ltd.. 4C Lower 

 Sac^feville Street, Dublin Single Copies, Is. each. 



NATU.RB. 



A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE. 



PRICE ONE SHILLING. 



"NATURE" contains Original Articles on all subjects coming wrthin the 

 domain of Science, contributed by the most eminent scientific writers 

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

 Correspondence Co'umns, which form a medium of scientific discussion 

 and of intercommunication among men of Science; Reports of the 

 Proceedings of the Principal Scientific Societies and Academies of the 

 World ; and Notes on all matters of current scientific interest. 



SUBSCRIPTIONS TO "NATURE." 



{To all places Abroad) £ s d 



Yearly .. ... 2 17 



Half-Yearly ... .. 1 10 



Quarterly .. IS 



»■* A charffe <if Sixpence is in ■ ii«rngi.i g ycotcJiHiid Irish Cheques 



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



Martin's-st., London, VV.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 : 



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



HUDDERSFIELD. 



WITH THE ASSISTANCE AS REFEREES IN SPECIAL DEPARTMRNTS OP 



GEO. T. PORRITT, F.L.S., F.E.S. RILEY FORTUNE, F.Z.S. 



JOHN W. TAYLOR, M.Sc 

 Price 1/6 net. 



This Journal is one of the oldest Scientific Periodicals in the British Isles dating bacK to l8,?3 

 London : A. BROWN & SON. Ltd., 5 FARi<lN<JDON AVENUF., E.G. 



Prepaid Subscription, 15/- per annum, posi free. 



Communications to be addressed to the Editors of the NaturaJist, The Museum, Hiili. 



