Nature . SCIENTIFIC INSTRUMENT MAKERS TO HER MAJESTY THE QUEEN AND THE GOVERNMENT. Ph ICAL InsMakers bySp Al-POINTMENT TO Makers of every descrip-tion of OPTICAL andPHYSICAL APPARA-TUS of the highest class,for Colleges, Institutions,&c. Catalogue ofOPTICAL LANTERNS,PROJECTION APP.^RA-TUS, and SLIDES, f> ELECTRICAL MACHINES. Best ( luality, 12 in., 70s. ; 15 in., £; loi. ; 18 Id loi. Multiple-PlateMachines, .£20 to ^150. As made for the Science and Art Depart-ment, and the Universities of Oxford, Cambridge, London, Sydney,, McGill, Montreal, &c. 3 FLEET STREET, TEMPLE B


Nature . SCIENTIFIC INSTRUMENT MAKERS TO HER MAJESTY THE QUEEN AND THE GOVERNMENT. Ph ICAL InsMakers bySp Al-POINTMENT TO Makers of every descrip-tion of OPTICAL andPHYSICAL APPARA-TUS of the highest class,for Colleges, Institutions,&c. Catalogue ofOPTICAL LANTERNS,PROJECTION APP.^RA-TUS, and SLIDES, f> ELECTRICAL MACHINES. Best ( luality, 12 in., 70s. ; 15 in., £; loi. ; 18 Id loi. Multiple-PlateMachines, .£20 to ^150. As made for the Science and Art Depart-ment, and the Universities of Oxford, Cambridge, London, Sydney,, McGill, Montreal, &c. 3 FLEET STREET, TEMPLE BAR, LONDON, xso NEW MICROSCOPE THE BRITISH STUDENTS. Microscope Stand No. 55, asfigured, with Iris Diaphragm,One Eye-piece; Double Nose-piece, Two Object-glasses, 2/Sand 1/6, adjusted to be inabout focus, and the Tvholepacked in polished MahoganyCase, £6:8:6. R. &. a. BECK, Ltd., 68 CORNHILL, LONDON, BROWNINGSPANERGETIC BINOCULAR OPERA, FIELD AND MARINE GLASS. Has 12 Lenses, gives a very large field of view, arid exhibits objects with remarkable brightness and clearness. The Panergetic isthe best Binocular, forgeneral use, made ; onlyits price has prevented itfrom being more widelyknown and used. Now itis reduced nearly half inrprice. The medium sizein Black Enamel being£2 5s., and in Alum-inium ^3, in best Casescomplete. FULL PARTICULARS BY POST.


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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience