Bulletin of the of Agriculture . Penetration in Red Gum—Heartwood. 1, treated 30 minutes; 2, treated 60 minutes; 3, treated 120 minutes. The numerous tyloses andthe infiltrating substances in the cell walls greatly retarded penetration. Bui, 606, U. S. Dept. of Agriculture. Plate Penetration in Larqetooth Aspen—Heartwood (Populus grandidentata). 1, piece No. 45 treated 30 minutes; 2, piece No. 46 treated 60 minutes; 3, piece No. 47 treated 120minutes. Largetooth aspen showed very erratic penetration, which is well illustrated in thethree specimens shown. Bui. 606, U. S. Dept
Bulletin of the of Agriculture . Penetration in Red Gum—Heartwood. 1, treated 30 minutes; 2, treated 60 minutes; 3, treated 120 minutes. The numerous tyloses andthe infiltrating substances in the cell walls greatly retarded penetration. Bui, 606, U. S. Dept. of Agriculture. Plate Penetration in Larqetooth Aspen—Heartwood (Populus grandidentata). 1, piece No. 45 treated 30 minutes; 2, piece No. 46 treated 60 minutes; 3, piece No. 47 treated 120minutes. Largetooth aspen showed very erratic penetration, which is well illustrated in thethree specimens shown. Bui. 606, U. S. Dept of Agriculture. Plate XI,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
