Nature . Ph ILOSOPH ICAL InsTRU- MEN T MaKB RS BV SrECIAL A PPOINT^ ENT TO THE Kov AL Institution of i Great Britain. Mak rs of every descrip tion of OPTICAL .inc PHYSICAL TUS of the highest class lor Colleges Institutions &c. Catalogue ofOPTICAL APPARA-TUS, and SLIDES, ELECTRICAL MACHINES. Kest Duality, i2in.,7oj. ; 15 in., i;5 loJ- ; 18 in., (.6 ^as. Multiple-PlateMachines, ji^a to .£150. As made for the Science and Art Depart-ment antl the Universities of Oxford, Cambridge, London, Sydney,, McGiU, Montreal, &c. 3 FLEET STREET, TEMPLE BAR, LONDO
Nature . Ph ILOSOPH ICAL InsTRU- MEN T MaKB RS BV SrECIAL A PPOINT^ ENT TO THE Kov AL Institution of i Great Britain. Mak rs of every descrip tion of OPTICAL .inc PHYSICAL TUS of the highest class lor Colleges Institutions &c. Catalogue ofOPTICAL APPARA-TUS, and SLIDES, ELECTRICAL MACHINES. Kest Duality, i2in.,7oj. ; 15 in., i;5 loJ- ; 18 in., (.6 ^as. Multiple-PlateMachines, ji^a to .£150. As made for the Science and Art Depart-ment antl the Universities of Oxford, Cambridge, London, Sydney,, McGiU, Montreal, &c. 3 FLEET STREET, TEMPLE BAR, LONDON, NEW MICROSCOPE THE BRITISH STUDENTS. Microscope Stand No. 55, asfigured, with Iris Diaphragm,One Eye-piece; Double Nose-piece, T-wo Object-glasses, 2/3and 1/6, adjusted to be Inabout focus, and the Tvholepacked In polished MahoganyCase, £6:8:6. No, 55- R. & *J. BECK, Ltd. 68 CORNHILL, LONDON, BROWNINGS PliATYSCOPIC LENS. With Larger Angles, Increased Field, and Improved Definitiom
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Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
