S6S.qz 



A WEEKLY ILLUSTRATED JOUKNAL OF SCIENCE. 



*' 7(3 Mtf solid ground 

 Of Nature trusts the mind which bidlds for aye.'''* — Wordsworih. 



' ,This Universal Lanteri 



' has been devised for th' 



I pTojeciion of exper' 



I and slides either horizontally 



I or vertically ; it can easily 

 he adapted for use ns a 



I Lantern Micrn^^cope. The 



or I :< i .\.\ ,■■< ' /■/// AV.Vc;. 

 NEWTON & CO.. Makers, 3 IIJ:et ST., LONDON. 



THE NEW 



^"LONDON" 



MICROSCOPE. 



With Eye -piece | inch, J inch 

 I, '!\%\ ^ ^//" Object - glasses, in Mahogany 



%^^ £5 12s. 6d. 



Double Nose-piece, 9/- extra. 

 Focussing Substage, 14/6 extra. 



R. & J. BECK, Ltd., 



68 CORNHILL, 

 3L.0 3V1D01V. 



Hase-boaid is made 



so that the Lantern 



packed into a box.iSj xJS* 



X;^oi. 



No Science School is com- 

 plete without one. Will be 

 sent on approval if desired. 



REYNOLDS & BRANSON, Ltd., 



ES AN.,1 LEEI3S. [CArAL-OCUKS FrEE. 



NEGRETTI &. ZAMBRA'S 



SELF-RECORDING 



METEOROLOGICAL INSTRUMENTS. 



THE THERMOGRAPH, for Outdoor or Indoor Observation. 



This Instru- 



in a Japanned 

 Metal Case with 

 Class Front, and 



supply of Charts for 



year, £7 O O. 



Accurate Thermometers tor all purposes. 

 Illustrated Price Lists free by Post to all parts of the world. 



N E G R ETTI & ZA WI BRA, 

 38 HOLBORN VIADUCT, E.G. 



Branches — 45 Cornhii.i., and 122 1\k<.?k.nt Street.; 



AWARDED TWO GOLD MEDALS PARIS EXHIBITION 1900. 



V 



»!/-.. 

 ^... 



Z^ 



