A Manual Of Photography

 iMittMU^ PRACTICE OF PHOTOGRAPHY. 244 of bromine, of a fixed proportion and convenient etren to pure d 8 usine allowing the bromine to sepa- to the mark, then add, by means of the dropp b proper quantity of the saturated solution »"rommm 1 ‘-The purity of the water is of some importance. .he tore ran proportions råer to the pure distilled water, audit's well known that the water of rivers and springs *3 different varieties can be used as absolutely pur .J a few drops of nitric acid till they taste slightly add, two three drops to the pint is generally sufficient colour, solution, and I shall call it simply bromine water, to dis! g 11 £x employ for subjecting the plate . the vapour of the bromine water is constructed in the Jmanner -It consists of a box lined with a varnish, which is not acted on by bromine; its height is about four inches; the other dimensions are regulated by the size of the which ought to be at least half an inch all round, shot' the X of the box ; it is composed of three separate portions—the cover, which is the frame holding the plate, the bodv of the box, and the bottom, upon which is placed vessel for the bromine; this moveable bottom “®hW £ lowed, so that the bromine vessel may always be placed in eXFew “veZe more for photography than I’isemp and . 1 11 «u^ffestions he has been exceedingly ,1PP) Ä waters prepared is used with the best effect by our most eminent daguerreotype aitis s. d of M de Bromide of iodine is best prepared by à method °11B Valieours, which is as follows:- “ Into a bottle of the ^capac, of about two ounces, pour thirty or forty drops of'bromethe precise quantity not being of importance, then add, grain by