Part 2 — Notes to Chapter XXI.
Reading edition
The essential facts regarding wounds and healing by occlusion are given in Marshall Ward, Timber and some of its Diseases, 1889, chapters viii. and ix., and in Laslett, Timber and Timber Trees, 1894, chapters iv. and v. More detailed treatment will be found in Frank, Krankh. d. Pflanzen, B. 1. cap. 2, where the special literature is collected. The reader may also consult Hartig, Diseases of Trees, Engl. ed. 1894, pp. 225-269.