SCIENCE-GOSSIP. 



Reoolutionisitid Pbotograpbp. 



SPECTRUM 



AND 



LIGHT FILTERS. 



Write for Booklet "Orthochromatic Photography" 

 (simplified), by James Cadett. Gratis. Post Free. 



CADETT & NEALL, Ltd 

 ASHTEAD, SURREY. 



Photographic Dry Plate and Paper Manufacturers. 



THE 



HORNTOH 



Illustrated 

 Catalogue. 



ICKARD 



CAMERAS 



AND 



SHUTTERS 



Make Photography a 



Pleasure. 



"AMBER "and "RUBY" 



Cameras for Hand or Stand. 



Price from ;£4 3s. 6d. 

 Time and Instantaneous 



Shutter, from 12s. 6d. 

 ' Standard Pattern, 



from 18s. 6d. 



Prospectus and 



Entry Form for 



New £105 Prize 



Competition 



post free. 



The THORNTON-PICKARD 



Manufacturing Co., Ltd., 



HUGHES' SCIENTIFIC OPTICAL LANTERNS 



CINEMATOGRAPHS. __ 



Hughes' Marvellous 



PAMPNENGOS 



Gives brilliant 12-ft. pictures like 



Limelight. 

 The £4 4S. reduced to £3 lOs. 



TiilE 



SCIENCE LANTERN 



An Innovation. Perfect. 



OXY-HYOROCEN 



MICROSCOPES 



"'^i^-ss^'; 



HUGHES' LA PETITE 

 SNAP-SHOT CINEMATOGRAPH- 

 CAMERA, 



Printer, Projector, Reverser, price 

 £6 lOs., reduced to £5 lOs. 



THE UNIVERSAL 



4-wiok Lantern 



With 4-inch Condensers, 18s. 6d 

 Grandly Illustrated Catalogue, 180 choice Engravings, lOd. : Smaller ditto, 5d Grandly Illustrated Cinematograph List, 6d. 



All Post Free. 



HUGHES' PHOTO-ROTOSCOPE CINEMATOGRAPH, £7 7s. ^",'^,n™ ^ig^ cass work xech 



^^ ••■>■■ WM. am iij oii/a ■ «. meal Fhcktnng reduced to a mmimum. 



""^v^ f600^.'l.?'^"fi®'^"^®>:T'^ ^"\'' EQUATORIAL ASTRONOMICAL TELESCOPE, by Cooke, with Battery of Eyepieces, cost 

 over £600 , also a fine 4-mch latest, by Cooke. An 8-inch Newtonian Reflector, £^7 IDs. : a si-inch ditto £11 15s. Several 

 and'l'ev.r^rothr '' T'^' "T^u"' ^''° \ «"- BINOCULAR MICROSCOPE bv Beck, cost £120 ; a ditto by Negretti & Zambra 

 and several others. To be sold bargams. List Free. Can be had on the Hire-purchase system. 



X-RAY INDUCTION COILS, 5-, 6-, and 8-inch Sparks. Bargains. Quite new. Also Batteries. List Free. 



HUGHES' BIJOU ENLARGING LANTERNS ^n innovation, rectangular or square condensers ; fuH marginal 



..- ,• -r- , . T5 r 1. • , . r. , '*■' ■ *■■■"*»■ definition, perfect illumination ; portable, reliable, rapid, quick, 



artistic Enlargements. Before purchasing, see this high-class technical apparatus, which is scien'ifirally constructed for results. Price List, ««*. 



*;i;rl.??.?r,l:5®f^*"l'I® ^®*Q ^* Science Subjects and Travels, &C. 60,000 Slides ; List, 8d. Post Free. 50 beautifully coloured 

 Slides loaned for 3S. By Subscription for the year, 450 lOs. 6d. ; 1,000 21s. Hire List, id. 



"W. C HTJCarHSSS, Specialist in Optical Projection. 



(Established over 30 years.) 



Brewster House, 83 Mortimer Road, Kingsland, LONDON, N. 



