11 



JAMES SWjFT & SON 



PORTABLE MICROSCOPE. 



Stand in Leather Case, with packings 



for Objectives, Apparatus, etc. 



List price, subject to war advance, 



£5 



VTe can noiv supply 

 WENHAM BINOCULAR BODIES 



for this Stand. 



This instrument is in very 



wide use amongst members of 



theQ.M.C. 



LOW POWER 



WATER IMMERSION 

 OBJECTIVES 



for examining Aquatic Organisms. 



25 mm £1 15 



1(3 mm 1 15 



UNIVERSITY OPTICAL WORKS, 



81, TOTTENHAM COURT RD., 



LONDON, W.I. 



J. POOLE &L Co. 



(Established 1854), 

 SCIENTIFIC AND EDUCATIONAL BOOKSELLERS. 



LARGEST STOCK IN LONDON OF 



Second -Hand Scientific Booiis 



ON ALL SUBJECTS AT ABOUT HALF PUBLISHED PRICE 



NEW BOOKS AT LOWEST PRICES 



Enquiries by Letter Receive Immediate Jlttention 



104, CHARING CROSS ROAD, LONDON, W.C.2. 



SECOND-HAND 



AT 



HALF PRICES! 



NEW BOOKS at Discount PHces, 



Books on MICROSCOPY and in all branches of NATURAL 

 HISTORY, SCIENCE, etc., also for all Examinations (Elementary 

 and Advanced). Sent on approval. Catalogues Free. State wants. 



Books Bought ; best prices given. 



IHT. & G. FOY1L.E 



I 121-123, CHARING CROSS ROAD, LONDON, W.C.2. 



