Of all Booksellers. Price One Shilling net. 
NATUORAL SCIENCE: 
f A MONTHLY REVIEW OF SCIENTIFIC PROGRESS. 
Contains Notes, Articles and Reviews by the most eminent Naturalists. 
LONDON AND NEW YorK .. .. .. MACMILLAN AND Co, 
Bird-Nesting in North -West Canada. 
BY ALTER RAIN 
Sun Lithogr aphing a Se Printing Co., Torents Canada. 
Finely Hfiustrated with rhete-Reaceninen and Coloured Pliates. 
“Price $2.50; 10s. 6d. Reeth Money. ToS 30th, $1.50; 
6s. English Money. Yo cents a oe extra for postage 
e book dg an aecouet of collecting in the North West. lescribes in an interesting 
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of country, acca rare birds were found oe oy es oaccast = the Ni. esting Habits 
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This book will be found —— ing reading * British as well as American Ornithologists, as 
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he price to subscribers sii. before chs se will be $1°so; to British Ornithologists, 
Six etry i The illustrations a: rth. the 
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* For the convenience o English subscribers, the Rditors of ‘ The Naturalist’ will 
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Now ready, 8vo. cloth, price 6/-, post free. 
LIST of YORKSHIRE LEPIDOPTERA, 
By G. T. PORRITT, F.LS. 
Contains copious records of the localities, &c., of the 1.340 species of macro- 
and abate or ance known to inhabit the county ; Sara of local variation 
in species; with all other necessary information on the 
To be had only from the Hon. Secretaries of the Yorkshire Naturalists’ Union. 
WM. DENISON ROEBUCK, Sunny Bank, Leeds; 
E. PONSONBY KNUBLEY, Staveley Beta, Leeds ; 
EDGAR R. WAITE, The Museum, Leeds. 
Just Published. Crown 8vo, Cloth limp, 370 pp-, $8.3 Net, 3s. 9d-; By Post, 45. 
THROUGH AIREDALE: 
From GOOLE ro. MALHAM. 
By JOHNNIE GRAY (H. Speicur), 
Member eh the Yorkshire Naturaiists Union; the Bradford Naturalists’ Society; &c. 
Author of ‘A Tourist’s View of Ireland,’ ‘ Pleasant Walks around Bradford,’ &c. 
k,a la of which is printed in msg stbsen lear 
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The work also sa tein rd troductory chapters gn the 
“GEoLoGy, ‘BOTANY, ORNITHOLOGY, F FOLK-LORE, 
and ANGLING in AIREDALE. 
SEVENTY ILLUSTRATIONS AND. boomed 
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