Science-gossip . Beck, cost £120 ; a ditto by Negretti & Zambraand 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 scienifirally constructed for results. Price


Science-gossip . Beck, cost £120 ; a ditto by Negretti & Zambraand 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 scienifirally constructed for results. Price List, ««*. *;i;,l:5®f^*lI® ^®*Q ^* Science Subjects and Travels, &C. 60,000 Slides ; List, 8d. Post Free. 50 beautifully colouredSlides 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. SCIENCE- G OS SI SIMPLE and RELIABLEMECHANISM. A FILMIiESS CINEMATOGRAPH For taking and projecting life-size animated photographs withgreatest perfection to the extent of over 500 pictures. Specially constructed for the Amateur op Professional. Price £6 10s. Negatives and Positive Plates 2 6 each. Subject Plates, 3/-. 6d. allowed for each Platereturned unbroken. fr COMPLETE OUTFIT, including Kammatograph, Lan-tern, Jet, Tripod Stand, Print-ing Frame, Developing Tray,&c., £11 the KAMMATOGRAPH an ordinary dry glass plate is usedinstead of cinematograph film. The method of developing KAM-MATOGRAPH plates is the same as with dry plates, thusbringing cinematography within the reach of —Can be seen at the Lantern and Jet, in travelling box .. .. .. £5 Do., do., with patent electric arc lamp .. .. .. .. £6 PATENT RHEOSTAT, which takes from 12 to 50 amperes atno yolts without overheating. Price on 7>iadefor 200 and 250 vo


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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience