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Lithography (May be added and when)

may be added, and when the bleaching is effected | treatment; but it must be borne in mind that the prints should be well washed with fresh water and slowly dried.

On the first trial of this process, remarks Dr.

Hayes, a degree of alarm will be felt in the case of paper is a firmly felted mass of short fibres which resist all diluted acids and most chemical agents may be soaked in various fluids for weeks, and for a long time wet, if not exposed to mechanical a highly prized favorite at this seeming careless | abrasion by touch or rapid motion.