AMNH LIBRARY 



SCIENCE- G OSSIP. 



100164829 



KODAK 



cameras arc universally used and esteemed because of their simplicity and 

 because the films can be put in and taken out in daylight, thus 



NO DARK ROOM IS NEEDED FOR CHANGING, 



Kodak cameras are readily mastered by anyone in a few minutes. The 

 manual of instructions, supplied free with every instrument, carefully and fully 

 explains each step in Kodak Photography. 



KODAKS from 5s. to £7 7s. 



Catalogue Free. 

 USE NIKKO PAPER or SOLIO P.O.P. for prints of Natural History, Scientific 



and Technical Subjects. 



OF ALL PHOTOGRAPHIC DEALERS OR OF 



KODAK, Ltd., 43 Clerkenwell Road, LONDON, E.C. 



Wholesale and Retail Branches : 96 Bold St., Liverpool, and 72-74 Buchanan St., Glasgow. 



Retail Branches : 60 Chcapside, London, E.C. ; 115 Oxford St., London, W. ; 171-173 Regent St., 



London, W. ; and 59 Brompton Rd., London, S.W. 



THE WATSON PRISM GLASS. 



Z 



o 



M M 



B 



B S 



o* 



X 

 w 



ORDINARY FIELD GLASSES SUPERSEDED. 



Is invaluable to 



NATURALISTS, 

 ASTRONOMERS, 

 TRAVELLERS, 

 YACHTSMEN, 

 SPORTSMEN, 

 NAVAL and 

 MILITARY MEN, 

 in fact, 



EVERYONE 



THAT PRISM 



PRODUCES 

 THE 



WONDERFUL 

 EFFECT. 



o 

 a 



M 



a 



© 



Will Increase his knowledge and add to his pleasure by using the Watson Prism Glass. 



Prices in Case :— Magnifying power 4 diameters, £6; 7 diameters, £7 15s. ; 9 diameters, £9 5s. 

 Send for Descriptive Price List. It will interest you. 



09 

 Q 



a 



m 

 w 

 to 



M 



w 

 r< 



H 



MICROSCOPES 

 OBJECTIVES 

 SUBSTAGE 

 CONDENSERS 

 and 

 ACCESSORIES 



The 



finest 



in the 



world 



for 



the 



Amateur, 



Laboratory, 



Student, 



School, 



Specialist. 



Send for Catalogue No. 2— it contains full particulars of the above— post free. 

 Watson's Catalogue of Microscopic Objects (No. 3) is a Classified List representing a stock of 50,000 first-class specimens, post free. 



UNIQUE MODELS.:— 

 WATSON'S VAN HEURCK 

 WATSON'S EDINBURGH STUDENT'S 

 WATSON'S ROYAL 

 WATSON'S FRAM 

 WATSON'S SCHOOL 



W. WATSON 6c SONS, Opticians to H.M. Govt., 313 High Holborn, LONDON, W.G. 



Established 1837I />>W^-|6 FORREST RD., EDINBURGH ; 78 SWANSTON ST., MELBOURNE, AUSTRALIA. 



Spottiswoode & Co. Ltd., Printers, New-street Square, London. 



