y 



JSTRATED JOURNAL OF SCIEPi^]^ 



" 7.) ihe solid ground ^v* 



A WEEKLY ILLU 



Of Nature trusts the mind I'hich builds jar aye." — Wordsworth 



No. 2248, Vol. 90] 



THURSDAY, NOVEMBER 28, 1912 



[Price Sixpence 



Registered as a Newspaper at the General Post Office. ) 



[All Rights Reserved. 



NEWTON & Co.'s 



New "College " LANTERN. 



MADE ENTIRELY IN METAL, 

 With Removable Bellows Front, giving an open stagi 



for Sc 



Work, 



'M 



f requiit 



ventilated "Steam Proof" Condense 

 closed Arc Lamp, Resistance, &c. 



In Case Complete £7 12s. 6d. 



(Woodcut in course of preparation.) 



This is probably the very finest value in Optical Lanterns for Class 

 Room Work that has ever yet been put on the Market. 



Wrilijor Particulars, or call and SC£ the Instrument in Messrs. 

 NEWTON Sf Co.'s Neu- 



OPTICAL & DEMONSTRATION SHOWROOMS, 



At 72 WICMORE STREET, LONDON, W. 



Late at 3 Fleet Street, E.C. (Two minutes' walk from 



Bond Street Station, C.L.R.) 



By Royal Warrant to H.M. the King and the Government. 



The Handle 



London Model. % 



This is a new model, in which 

 the limb is made so as to form 

 a convenient handle for lifting 

 the microscope. Oiherwise it 

 is similar to the ordinary 

 London model. 

 No. 1325. Stand, in case, 

 £3 5 6 

 No. 1329. Stand, incase, 

 with spiral focussing 

 substage 4 

 N0.364A. Eye- 

 piece 5 O 



No. 801. :<rds 

 Object Glass 12 O 

 No. 803. Jth 

 Object Glass 1 10 O 



Full Particulars of 



R. & J. BECK, 

 68 Cornhill, E.C. 



" RYSTOS " MICROSCOPE 

 PLATFORM 



Gold Medals 

 London 1908 



Allahabad 1911 

 Cra .d Prix Turin 1911 

 2 ^medals York 1912 



For use wiih the Stroud & Rendell Science Lanterns This platform 

 is adju table so that any ordi ary niicrosr pe (the draw tube being 

 removed) can be used for projection work. The platform can be raised 

 or 1 wered in order that the optical centre of the microscope may 

 coil, ide with that of the lantern £17 6 



Cata'-.pte of Optical Lanterns and descriptive circular 0/ Accessory 

 ■Apparatus for the S. &• R . Lanterns, post free. 



A Recording; 

 Barometer of < 

 the highest S 

 quality and \ 

 best finish. ! 



Acceptable Presents. 



The problem of finding really acceptable Gifts at SI 

 Christmas time is solved by many of our instru- SI 

 ments, as — Barographs, Barometers, Binoculars, SI 

 Telescopes, Microscopes, Meteorological Appara- SI 

 tus, &c.,' and a loo-page Illustrated List of SI 

 " SciEN 1 ;fic Presen rs " will be sent post free S! 

 on request. 



Negretti & Zambra, 



Holborn Viaduct, London, E.C. 



BRANCHES : 



|S 45 Cornhill, H.C. ; 122 Regent St., W. 



•o*o«o»o*o«o«o«o«o*o«o*o*o*o«o*o*o«o«o«o*o*o«o«o»Oiio 



