Ixxxvi 



NA TURE 



[June 25, 1905 



THE JUBILEE CATALOGUE 



ISSUED TO MARK THE 

 FIFTY YEARS' EXISTENCE OF THE FIRM 



OF 



E. LEYBOLD'S NACHFOLGER, 



e©L©GIVE, 



Contains on its more than 900 pages a complete 

 survey of the apparatus used for instruction in 

 Physics, as well as numerous practical instruc- 

 tions and about 3000 illustrations. 



NATURE says:— "The firm of Leybold Nachfolger 

 in Cologne has recently issued a very complete and 

 interesting catalogue of physical apparatus and 

 fittings sold by them. The book starts with a history 

 of the instruments made in Cologne during the last 

 century. In its second section we find an account 

 of the construction and fittings of various chemical 

 and physical institutions. After this follows the cata- 

 logue proper, filling some 800 large pages, profusely 

 illustrated and admirably arranged. The book will be 

 most useful to the teacher." (No. 1846, Vol. 71.) 



ZEISS FIELD-GLASSES 



THE CATALOGUE WILL BE FORWARDED TO SCHOOLS 

 AND INSTITUTES ON APPLICATION. 



WITH ENHANCED STEREOSCOPIC EFFECT. 

 x6, £6 O 0. 

 x8, £6 10 O. 



FOR TOURISTS. 



SPECIAL TYPES FOR NATURALISTS, 

 MARINE WORK, HUNTING, &c. 



Illustrated Catalogue, "Jn," Post Free on Application 



CARL ZEISS. 



Branches : 

 LONDON: 29 Margaret St., Regent Street, VV. 



burg, Vienna. 5t. Petersburg. | 



ankfort o ,M. Ha 



NO MUSEUM OR BIOLOGICAL LABORATORY IS COMPLETE WITHOUT 



THE SMEDLEY MODELS 



OF PALyEOZOIC FRUCTIFICATIONS AND JURASSIC MONSTERS. 



SElilES Ji.~ 



SMEDLEV'S. RESTORATION OF 



......PJPLODOCUS CARNEGII. 



Arrpho^phXT ^c^'^"^!^^^^^' ''''''''^-^ *^« -P-'^^^ flowers of Rafflesia, 



FOR PRICES AND PARTICULARS APPLY— 



SMEDLEYS MODELLING LABORATORIES, 



628 Green Lanes, Harrin^ay, London, N. 



Modeller .0 th'^M"'''' '' '!'? "" ^' '"' ^'"^°'-^^' ''■'"«•' ^•<^-S-. Cu.aton of the ToUenham Museum.) 



