One of eighty-six early incandescent lamps. Carbon filament lamp, single filament make up of 2 straight carbon ? at top. Attached to lead in wiries drilled carbon cylinder. Lead in wiries sinlge piece bent platinum both passsing through one stem of red glass. Bulb clear, unusual shape, tapering, smallerratings at top than new base, with long panelled neck. Top pip. Cappal with writer leaved brass semicylinders surrounding neck, each solderd to one lead in wire. Gerard Lamp 1885 on stuck label (probably not original) also bearing number 1912192. No ratings given. Filament broken, bulb broken at neck but held together by cup.

One of eighty-six early incandescent lamps. Carbon filament lamp, single loop filament, no filament supports. Filament cemented into drilled carbon cylinders filted over platinum lead inwires passing into two glass stems containing mercury and filled with plaster. Bulb ellipsoidal, opal glass, joined to clear glass just above long neck; lamp has snapped at neck, but been glued back into position; no vacuum. Sealing pip at side of neck. Base: copper wires lead out of plaster ( 1 now broken) through fibre washer at bottom of loose fitting brass cylinder one wire originally soldered to cylinder, one central metal pin. Lane-Fox. No ratings specified.

One of eighty-six early incandescent lamps. Single loop filament, no loop supports. Cemented joints to leads passing through single glass stem. Round clear bulb with short nexk. Top pip. Cyclindrical Brass base, oversize for neck of lamp, attached by plaster, with projecting brass pin and spring off centre. Lamp is brass turning, with female thread at bottom containing loose wooden insert with brass contact plate, held and positioned by single lug fitting dimple on lamp base, (similar to those used on bayonet cap). Swan United Electric Light Co. Ltd. etched on bulb. No ratings marked (probably 20 c.p. - that was standard). Date must be 1882 or 1883.

One of eighty-six early incandescent lamps. Arch filament, thick and stiff. No support. Filament affects to have thickened ends resting on right-angle-bent platnium (?) Wires - the end of the filament proper passing through holes in the wires. Platiniums connected to substantial copper wires (showing what appears to be oxidation) held apart by mica (?) plate to which they are rivetted. Each copper wire is welded to four platinium wires passing through a pinch seal. Large clear pear shaped bulb. Top pip. Large Thomas Houston base, plaste attached and insulated, located by dimples in the glass (base cylindrical large circular plate at bottom with central female screw thread). Ediswan - has "EDISWAN SERIES" etched on glass. Thomas Houston - has on base THOMAS HOUSTON SAWYER - MAN PATENTS, JAN 1 19, MAY 12 85, OCT 30 88, PATENTS APPLIED FOR 6.8 AMPS 32 CP eched on glass. For base see 1923 - 135 (3).

One of eighty-six early incandescent lamps. Two single loop filaments, one longer than the other. One support for each filament, attached to side of bulb. Each filament attached to platinium passing through seperate pinch seals. Pear shaped bulb, clear, with shoulder to base. Top P.P. Bayonet type cap, with shoulder, but with unusual bottom contacts, and with horizontally projecting pin and knob from base. Base attached with plaster but insulation at bottom is fibre, and there are three segmental contacts, with a gap for the rest of the circle. (? Is this a switch - use the knob to turn the lamp between off/dim/bright). Ediswan - etched (faintly) on glass. 100 - 8, 100 - 16 etched faintly on glass (volts-c.p.). Also, '32' etched on glass nearone filament support, in script.