. Bulletin of the Department of Agriculture. Agriculture; Agriculture. ZACATON AS A PAPER-MAKING MATERIAL. 15 The true fiber (fig. 11) has remarkably good felting qualities, but its length is less than that of esparto, which varies from to millimeters. CHEMICAL INVESTIGATION OF THE GRASS AND PULP. In cooperation with the Department of Commerce, an investiga- tion of the chemical nature of zacaton grass and pulp in regard to such points as have a bearing on their paper value was conducted at the Bureau of The pulps examined were from cooks 7, 8, 9, and 10. The report of
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. ZACATON AS A PAPER-MAKING MATERIAL. 15 The true fiber (fig. 11) has remarkably good felting qualities, but its length is less than that of esparto, which varies from to millimeters. CHEMICAL INVESTIGATION OF THE GRASS AND PULP. In cooperation with the Department of Commerce, an investiga- tion of the chemical nature of zacaton grass and pulp in regard to such points as have a bearing on their paper value was conducted at the Bureau of The pulps examined were from cooks 7, 8, 9, and 10. The report of this chemical inves- tigation, which needs no comment, is given in full, as follows: 1. Original straiv.â(a) Ash; (6) moisture; (c) ether- alcohol extract; (d) water extract; (e) cellulose by (1) Cross and Bevan chlorin method, (2) Cross and Be- van dilute nitric method, (3) Renker's chlorin method; and (/) loss on boiling with dilute caustic soda. It was found necessary to grind the straw very fine, on account of the lack of homogeneity of the samples. The largest sam- ples practicable with the unground straw gave widely varying results, so recourse was had at once to grinding all the straw in a clean coffee mill be- fore analysis. f*~ Analyses for comparative Fio. ll.âPulp of Epicampes macroura, X 352: /, Bast; 2, porous value should refer to drv parenchyma; 3, sclcrcid; 4 and 6, parenchyma; G, modified epi- '. , . dermal cells; 7, parenchyma of pith; 8, short epidermis cells; 9, material; hence the mois- long epidermis cells;/0, pitted trachea; //.annular trachea; 1Z, bast. ture was determined first to be per cent. The ash gave per cent in one determination and per cent in another. In both fuses a very large proportion of the ash waa silica, as shown. > The chemical work on im aton â '⢠> 'lone Mr. Ueorge S. Tilley, at that timo cellulose export at the Uiir<au of Standards, United States Department of Please note that these images a
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