I Weather forecasting a certainty 



WITH DAVIDSON'S 



OLD DUTCH WEATHER GLASS 



More sensitive than the 

 most perfect barometer. 



The water will rise in the spout as bad 

 weather becomes likely, falling for fine 

 weather. 



Price 1216 ; or post free in 

 U.K., 1416, abroad, 1716. 



" Nothingf disturbed its accuracy, and 

 its possession saved me many other- 

 wise anxious hours at sea." — Capt. 

 Kessler in Nautical Magazine. 



F. DAVIDSON & CO.. 



29, GT. PORTLAND STREET, LONDON, VT.l. 



WATKINS & DONCASTER 



NATURALISTS, 

 36, STRAND, LONDON, W.C 



(Fiva Doort from Charing Croii), 



Keep In stock every description of 



APPARATUS, CABINETS, BOOKS, AND SPECIMENS 



for Collectors of 



BIRDS' EGGS, BUTTERFLIES, MOTHS, ETC. 



Catalogue (96 pages) sent post free on application. 



THE IRISH NATURALIST. 



A Monthly Journal of General Irish Natural History. 



BOTANY. ZOOLOGV. GEOLOGY. 



Edited by Prof. GEO. H. CARPENTER, D.Sc, M.R.I. A., and 

 R. LLOYD PRAEGER. B.A.. B.E., M.R.I. A. 



This Magazine .should be in the hands of all Naturalists interested 



in the distribution of animals and plants over the British Islands. 



1/- Monthly. AnnusI Subacrlptlon (poat froo) 10I- 



DUBLIN— EASON & SON, 40, LOWER SACKVILLE STREET, to which address Subscriptions should 



be sent. 



BELFAST- EASON & SON 17, DONEGALL STREET. 



LONDON— SIMPKIN, MARSHALL, HAIVIILTON, KENT & Co. 



Printed at Browns' Savile Pres.s, 40 George Street, Hull, and published bj- 

 A. Brown & Sons, Limited, at 5 Farringdon Avenue, in the City of London. 



Aug. I St, 192 1. 



