Just Published 
FISHES 
THEIR JOURNEYS AND MIGRATIONS 
By Professor LOUIS ROULE 
With many Illustrations 12/6 net. 
Julian Huxley in Week-End Review : — “ Those 
interested in natural history should read the book. 
They will get a new idea of the astonishing 
facts about fish migration and the extremely 
interesting modern theories about its determination 
by physico-chemical conditions. And they will 
be left — always a stimulating sensation — with a 
host of questions which this study has provoked.” 
ROUTLEDGE 
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Irish Naturalists’ Journal 
A Magazine of Natural History, Antiquities and Ethnology. 
Published every Two Months by the I.N.J . Committee. 
Edited by J. A. S. STENDALL, M.R.I.A., M.B.O.U., 
with the assistance of Sectional Editors. 
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