Fourth Series. 

 Vol. XIX.. No. 226. 



October 15th. 1915 No. 892 





X*Y. 



x 



natural- -tysro^Y, 



(ESTABLISHED 1843.) 



Edited by FRANK. FINN, B.A., F.Z.S. 



LONDON : 



WEST, NEWMAN & CO., 54, HATTON GARDEN. 



SIMPKIN, MARSHALL & CO., Limited. 



PRICE ONE SHILLING. 



