gallo-tannic

Updated: May 3, 2025

There are various other tests such as gallo-tannic acid or infusion of nutgalls prepared a short time before application and may be used with advantage to restore writings that have been removed by washing. Place the document or paper on a sheet of white paper and moisten the whole of its surface with a paint brush dipped in the reagent, taking care not to rub it or strongly press it.

Jerome Buell Lavay - Disputed Handwriting : An exhaustive, valuable, and comprehensive work upon one of the most important subjects of to-day. With illustrations and expositions for the detection and study of forgery by handwriting of all kinds