Composite volume: 2 books bound together.
Binding: restored; full binding, material: sheepskin. Leather decoration technique on the cover: [unidentified]. Tooling: a design of different tools.
Ownership mark: Towarzystwo przyjaciół nauk w Wilnie [bookplate].
Bindings - Microchemical and instrumental analysis : pH – 5,8; Ferric chloride test: positive; Vanillin test: negative; Nitrous acid test: negative; Rhodanine test: positive; Tannin classes: hydrolyzable tannins; ATR-FTIR spectroscopy: gallotannins.