. The book of forestry. Forests and forestry. HOW TO TELL THE WOODS 279 determining what kind of wood it is but when it is a block or board a sharp knife and a pocket microscope are helpful, as the grain can only be properly judged when sharply cut and in some instances the structure. Courtesy H. P. Brown Fig. 63.—Cross-section of a ring porous wood (white ash), as seen through a microscope. Toward the top of the picture the large pores of the early spring growth and the dense wood of the late summer growth of the preceding year are seen close together. can only be made out with the aid of a m
. The book of forestry. Forests and forestry. HOW TO TELL THE WOODS 279 determining what kind of wood it is but when it is a block or board a sharp knife and a pocket microscope are helpful, as the grain can only be properly judged when sharply cut and in some instances the structure. Courtesy H. P. Brown Fig. 63.—Cross-section of a ring porous wood (white ash), as seen through a microscope. Toward the top of the picture the large pores of the early spring growth and the dense wood of the late summer growth of the preceding year are seen close together. can only be made out with the aid of a magnifying glass.^ 1 For a complete text book on identification of woods see '^Economic Woods of United States/' by Samuel J. Eecord. John Wiley & Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Moon, Frederick Franklin, 1880-1929. New York [etc. ] D. Appleton and Company
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