Nature . of iily. , magnifying ng the largest ishell Frames. NEW MICROSCOPE THE BRITISH STUDENTS. Microscope Stand No. 55. asagured, with Iris Diaphragm,One Eye-piece; Double Nose-piece, Two Object-glasses, 2/3ind 1,6, adjusted to be inibout focus, and the w^holepacked in polished Mahoganyi^ase, £6:8:6. 68 CORNHILL, LONDON, Engraved Real size. AN ACHROMATIC COMBINATION, COMBINING THE DEFINITION OF A MICROSCOPE WITH THEPORTABILITY OF A POCKET LENS. If you carry a small Platyscopic Pocket Lens (which every ob:Nature ought to do).*—Grant Allen in Knowledge. The Platyscopic Lens is invaluable
Nature . of iily. , magnifying ng the largest ishell Frames. NEW MICROSCOPE THE BRITISH STUDENTS. Microscope Stand No. 55. asagured, with Iris Diaphragm,One Eye-piece; Double Nose-piece, Two Object-glasses, 2/3ind 1,6, adjusted to be inibout focus, and the w^holepacked in polished Mahoganyi^ase, £6:8:6. 68 CORNHILL, LONDON, Engraved Real size. AN ACHROMATIC COMBINATION, COMBINING THE DEFINITION OF A MICROSCOPE WITH THEPORTABILITY OF A POCKET LENS. If you carry a small Platyscopic Pocket Lens (which every ob:Nature ought to do).*—Grant Allen in Knowledge. The Platyscopic Lens is invaluable to botanists, mineralogists,mologi^ts, as it focuses about three times as far from the objeclCoddington Lenses. This allows opaque objects to be examined ea: The Platyscopic Lens is made of four degrees of porespectively lo, 15, 20, and 30 diams. ; the lowest power, hfield, is the best adapted for general use. The Lenses are set in Ebonite Cells, and mounted in Tort Price of the Platyscopic Lens, vwunted in Tortoisesliell, magnifying either 10, 15, 20, or -^,0 diameters, each f>ozver, 1 5S. In nickelised German Silver, each poiver, 17s. 6d. Illustrated Description sent free. JOHN BROWNING. 63 STRAND. LONDON. NEGRETTI & ZAMBRAS NEW YEARS GIFTS, Useful & Do
Size: 1701px × 1469px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectnaturalhistory, booksubjectscience
