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NEWTON & CO., Opticians to the Royal Family,
8346 Newtonian “Universal” Science Lantern with lantern-slide front,
microscopic attachment, and spectroscope front, and fitted to take in¬ stantly any of the instruments mentioned below without alteration.
Flg‘ 8346 . . 0 0
shvn h lan!'eT'n’ ,Flg' 8.34l6,’ iiaH,be<f. Revised with a view to producing an instrument which tr™!wb taieme y Portable and which shall yet be capable of producing, with a minimum of trouble and rearrangement, most of the experiments required by' lecturers on Light, Photography, Colour, and similar subjects. s ’
, rfhe ,lan*ern 18 fitted with 3 fronts fixed to one brass plate. The change from one front to another m made by sliding the whole arrangement from stop to stop.
wrHofwnt 1Su°r sh,°wl„ng ordinary slides and diagrams and comprises 4-in. condenser w^canlfake^ aohr°matle front lens’ exhlbiting slides as well and clearly as any lantern The second front is a microscopic attachment fitted with sub-stage condenser and low power required" ^ addltl0nal hlgher Powers oai1 be supplied, and polarizing prisms fitted if
„ for spectroscopic work and is fitted with slit, direct-vision prism, and
achromatic focussing lens, which project a brilliant spectrum on the screen without the
necessity of placing the lantern at an angle.
A comparison prism is also fitted, by which, at the same time, an image is projected on the screen of any medium of which the absorption spectrum is being shown.
lhese d fronts can be removed and a photochromoscope or a vertical attachment or an elbow polanscope or any other front substituted in five seconds.
Fitber^rbi8 T*?4 ,°“aMnge and can be ^uioved °* put in position instantly. Either lime light or the electric arc can be used in this lantern. Every detail has been carefully arranged and the workmanship is of a very high class. *
Additional apparatus arranged to work with the above lantern.
8347 Po.r„0tl0Cllri°iTa?0Pfe f? Pr°j(!ctinff lTCS’ 8-colour system of colour photo¬
graphy with 6 sets of slides as shown in Fig. 8353, page 53 . . ..£12120
8348 Photoehromoscope Slides, 1 set of 3 pictures . ’ ’ o 5 0
A considerable variety of these slides can be swpplied.
8349 Vertical Attachment with lenses, prism, &c . 5 5 0
8350 Elbow Polariscope fitted to above lantern . 8 8 0
8351 Polarising Prisms fitted to microscopic attachment .. ,, 4 4 0
8352 Portable Cabinet Case to contain lantern and 3 fronts, capable of
being carried m the hand ,, .. ,, Q 17 6