The abstract of the original paper will appear in the later number of the Journal.

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The present paper deals with the proximate chemical compositions of two new woods which are tried to use for paper pulp.
Two kinds of wood, “Doronoki” (Populus Maximowiczii) and “Ezoyanagi” (Salix rorido) are subjected to the analysis by the same methods as reported in this journal.
The contents of cellulose and lignin in two woods are similar to those of other pulp woods used in industry
The lack of mannans in both the two woods may be pointed out to be noticeable as compared with the components of the other pulp woods.

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A criticism to Sisido's explanation (This Jour., 1930, 6, Abst. 43) on the fine structure of the fibre.
1. Spiral structure. It has shown that K. Sisido neglected the angle of splitting ignoring the author's data especially Fig. 1 in the previous paper (This Jour., 1930, 6, 206; Abst. 38). The author believes his theory to be most appropriate at the present
2. Bead-like swelling. K. Sisido has believed that a special skin on the cellulose fibre under the middle-lamella causes the bead-like swelling. This special skin theory can not explain what Fig. 2 and 3 in the previous paper (loc. cit.) show, the theory being the same in its idea with Lüdtke's one to which he opposed!

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