From writings formerly seen. A term used as descriptive of that kind of proof of handwriting where the knowledge has been acquired by the witness having seen letters or other documents professing to be the handwriting of the party, and having afterwards communicated personally with the party upon the contents of those letters or documents, or having otherwise acted upon them by written answers, producing further correspondence or acquiescence by the party in some matter to which they relate, or by the witness transacting with the party some business to which they relate, or by any other mode of communication between the party and the witness which, in the ordinary course of the transactions of life, induces a reasonable presumption that the letters or documents were the handwriting of the party. 5 Adol. A E. 730.