An Improved Writing Fluid

4447. Smith, F. P., and Beswick, G. F. Feb. 23. Ink.-Relates to a copying-ink which will remain wet on the paper for some time, and by which a copy may be taken on copying-paper without damping the latter previously. The ink consists of logwood water, nut gall, perchloride of iron, glycerine, and rosewater. Other ingredients having similar properties may be used in place of, or in addition to, the above. The Provisional Specification provides the use of common salt instead of rosewater.