This very convenient and useful Lamp has been designed to combine the qualities of other Microscope Lamps, together with greater portability, the whole fitting into a brass tubular box, the exterior of which is covered with morocco leather, the lid forming the stand of the Lamp. The metallic chimney being telescopic, occupies a very small compass; the condenser fits into the cell in front. The reservoir is of brass, and will contain sufficient petroleum for six hours consumption. The entire Lamp fitting into the case from the top, escape of the oil is prevented.
In trimming the Lamp care should be taken that the wick is perfectly dry, and the petroleum of good quality; also that none of the oil gets upon the metallic chimney or reservoir, or a bad smell will be given off until the oil is burnt away.
In using the Lamp it will be found convenient to slightly incline it, so as to bring the broad surface of the flame more parallel with the surface of the mirror of the microscope.
When it is necessary to re-line the chimney, screw off the sliding portion, wash out the old lining, and re-coat it with superfine Plaster of Paris. When dry it will be found ready for use — a few minutes will be found sufficient to do this.
Size of Case : Height, 6 inches ; Diameter, 3 inches.
While this Fiddian's Microscope Illuminator was retailed by
James W. Queen & Co., similar lamps were also sold by a several English firms.
This particular lamp came to this collection with a Zentmayer Grand American microscope.