Scientific and Educational Books 



NEW AND SECOND-HAND. 



Largest Stock in London of . . 



SCHOOL, MATHEMATICAL, MECHANICAL, BOTANICAL, 

 NATURAL HISTORY, ELEMENTARY AND ADVANCED 



SCIENTIFIC BOOKS 



Of ALL KINDS at about HALF PUBLISHED PRICE. 



Classical, Theological, and Foreign Books. 



KEYS AND TRANSLATIONS. BOOKS FOR ALL EXAMS. 



J. POOLE & CO. 



1854). 



104, Charing Cross Road, London, W.C. 



ENQUIRIES BY POST RECEIVE IMMEDIATE ATTENTION. 



r NATURE says .— " Presents iis readers month by month with acairate and 

 interesting accounts of modem scientific work prepared by writers in close touch with 

 knowledge in the making. In addition to illustrated articles, each issue of the 

 magazine includes sections in which the progress made in the various branches of science 

 is noted." 



ATHENAEUM says: — "This excellent a?id well-known periodical. . . . The 



^articles are all from the pens of authors eminent in their own lines." 



Q 

 U 

 



tc 

 O 



< 



j 



Q. 



KNOWLEDGE 



ILLUSTRATED 



SCIENTIF C 



^ N EWS. V 



m 



o 

 m 



0) 



o 



55 

 m 

 D 



MONTHLY, SIXPENCE NET. 

 Contains up-to-date articles by the ABLEST EXPONENTS in the 



VARIOUS BRANCHES OF SCIENCE 



AND NATURAL HISTORY. 



Profusely illustrated with full-page Plates, Photo Blocks, and Drawings. 



SUBSCRIPTIONS— Yearly 7s. 6d., Half-yearly 46. Special for 5 Years, £1 53. 



(ALL rOST FREE TO A.VY J'.IRT OF TUB WORLD.) 



Publishing Office: 27, CHANCERY LANE, LONDON. 



Or through any Bookseller. 



