. Science-gossip. Becks New Triple Nosepiece. and It is not perhaps quite so attractive asthe ordinary trefoil-shaped pattern, but has the advan-tage of being dust-proof and cheap. New Reversible Compressor.—A third noveltywhich the above firm have brought under our noticeis a new reversible compressor, designed by Mr. H. Briefly, we may say that it is made ofebonite, and consists of a lower and two upper lower plate contains an oblong thin glass, held inposition by two screws, the two upper plates contain. The Daxis Reversible Compressor. a projecting milled rin
. Science-gossip. Becks New Triple Nosepiece. and It is not perhaps quite so attractive asthe ordinary trefoil-shaped pattern, but has the advan-tage of being dust-proof and cheap. New Reversible Compressor.—A third noveltywhich the above firm have brought under our noticeis a new reversible compressor, designed by Mr. H. Briefly, we may say that it is made ofebonite, and consists of a lower and two upper lower plate contains an oblong thin glass, held inposition by two screws, the two upper plates contain. The Daxis Reversible Compressor. a projecting milled ring, which, when revolved,brings an upper thin glass in contact with the lowerglass. The whole arrangement is easily taken apartand conveniently arranged, whilst it is eminentlyserviceable. The price is los. 6d. Dissecting Microscopes.—Messrs. Bausch andLomb have brought out two new dissecting micro-scopes. The one consists of a small wooden case orbox, 4 inchesX2 inchesXiA inches. One end of thecase and the top is removable, and sen-es as a small glass stage slides in a groove at the top of thebox, and can be replaced by a glass stage with cell,opal glass stage, or black glass stage. Beneath is aplane mirror, and an upright rod carries three lenses,magnifying from 5 to 25 diameters. The other dis-secting microscope is very similar to Leitz well-known stand, but the focussing is by sliding adjust-ment instead of by rack and pinion. Abbe Camera Lvcida.—Messrs. Bausch andLomb have also brought out a simplified form of thi
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