A GOULD-TYPE CHEST MICROSCOPE BY DOLLOND, CIRCA 1830

constructed in lacquered brass with 5in. tube, signed on the rack and pinion support Dollond, London, contained in plush line tray with accessories including Leiberkuhn reflectors, live box, five nose pieces, stage magnifier and forceps, contained in wooden box of issue with two trays of wet cell slides by makers including Flatters & Garnett -- 8½in. (21.5cm.) wide

Sotheby's London, 30th October 2002, lot 51.

Dr. Mill notes:

Dollond and Co were founded in about 1750 and located at 59 St Paul’s Churchyard until 1869, and survive today as the opticians “Dollond & Aitchinson”. They were important makers of optical instruments but their microscopes were not generally of innovative forms. Their importance lay in the extremely high quality of their manufacturing and their excellent lenses

This instrument is a variant of the chest microscope developed by Charles Gould in the 1820s as a portable model while working for William Cary (after whom this model is sometimes named). The cylindrical tapered body and rackwork focussing are typical. A field lens is present and the eyepiece contains two biconvex lenses.

Very popular in their day these models were made in various sizes both affixed to chests and free standing (v. no 105 for an example of the later). This one is a large model with a wider range of lenses and more solidly built than usual.

The fine case is lined with blue baize and the microscope is contained in a lift-out tray with slides underneath. There is a complete set of five numbered lenses + two lenses fitted with Lieberkuhns and two lenses for use as a simple microscope. The stage is sprung. There is a small lens on an arm, a black/white disc and a small “watch-glass”. The case is fitted for all these. A small needle and disc arm are also present.

Condition Report

Lid has two cracks, otherwise good overall condition.

We are pleased to provide you with a general report of the condition of this property. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Charles Miller Ltd is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD “AS IS” IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE.