. Fi<;. 12. —Section of tracheides of pine-wood in process of dissolution by the ferment of Traiuetes pini. i-J^. (After R. Hartig.) wall and two striated secondary membranes; at h the fungus- ferment has caused a splitting of the primary wall, which formerly appeared as a single layer, and the elements are separating from each otlier; the " filling-material" of the inter- cellular spaces (under c), and tlie ring of lime surrounding the cavity of the pit d, remain for a longer time; the right wall of the cell h consists only of cellulose, (as indicated by the striation being no lo
. Fi<;. 12. —Section of tracheides of pine-wood in process of dissolution by the ferment of Traiuetes pini. i-J^. (After R. Hartig.) wall and two striated secondary membranes; at h the fungus- ferment has caused a splitting of the primary wall, which formerly appeared as a single layer, and the elements are separating from each otlier; the " filling-material" of the inter- cellular spaces (under c), and tlie ring of lime surrounding the cavity of the pit d, remain for a longer time; the right wall of the cell h consists only of cellulose, (as indicated by the striation being no longer shown, although still present); in the cell r the primary wall has disappeared, and the secondary and tertiary membranes thin off towards / in which only the ash constituents remain as fine granules, better seen in Fig. 13. In contrast to the lignin-dissolving fungi, there are those which dissolve cellulose. When wood is treated with sulphuric
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897
