The microscope in theory and practice / translated from the German of Carl Naegeli and S. Schwendener.

  • Nägeli, Karl Wilhelm, 1817-1891.
Date:
1887
Catalogue details

Licence: Public Domain Mark

Credit: The microscope in theory and practice / translated from the German of Carl Naegeli and S. Schwendener. Source: Wellcome Collection.

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    JAMES SWIFT & SON, OPTICIANS, UNIYERSITY OPTICAL WORKS, 8t, Tottenham Court Road, LOMDON, W. SEITEN GOLD MU)ALSAwjRDED.^bTpLOMll OF HONOUR, 1884. Extract from the British Medical Journal, August 27th, 1887. —“ Messrs. Swift & Son exhibited a Microscope (as shown in Illustration) at a Meeting of the British Medical Association, Dublin, with many improvements suggested by Professor Crook- Shank. It is intended especially for bacteriological research, and competes very favourably •with any of the foreign Micro- scopes, and is believed to be far superior to anything made for the price in England. It has a high angle sub- stage condenser, with contrivances for accurate centering, and for the insertion of stops without removal. The focus of the condenser can be accurately adjusted by a rack and pinion movement, this being found a matter of great importance when moderately low powers are being used. The stage is cut open in the centre with the object of allowing the slide to be removed more easily, and the stand is finished in the excellent manner for which Messrs. Swift are well known. Its price, with two eye-pieces, two objectives—i-inch and oil immer- sion—double nose-piece and Abbe Con- denser, is £it. The oil immersion objective is remarkable for its powers of definition ; it has been tested against many of Leitz’s and Reichart’s, which hitherto have been the cheapestglasses obtainable. and has been found superior to them This is high praise, as the price of the three is the same, namely, £$ 5s.” The fine adjust- ment of this Micro- scope is fitted with Swift & Son patent lever ar- rangement, or can, if preferred, be fitted with a dif- ferential screw. For work, Swift & Son would recommend Mr. Mayall’s (jun.) mechanical stage, which can at once be adapted to this Microscope with- out alteration, and readily removed when not required. Price & 15s. 'cd Catalogiu free for stamp. 22102077523