X-rays simply explained : a handbook on the theory and practice of radiography (1903)
Howgrave-Graham, Robert Pickersgill, 1880- · London : Percival Marshall & Co · leaf 92
nd the method of procedure t<» he adoptedwith it, shall he described. The developer is made up according to the follow-ing list of chemicals and proportions, and the twosolutions, if kept separate, will last almost indefinitely. X. 1. Eydrokmone . . . 150 grains Metol . . . . 50 grains Citric… … Miscellaneous Group of Objects:—Fountain pen in cat tacles in case; pencil, showing graphite; bradawl, Bhowing grainof wood ; instruments in wooden case; leather parse containingcoin, and showing internal and external clasps and ornamentalmetal corners of flap. Conditions as for Plates II. and…
X-rays · Cathode rays · Fluorescence
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