. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. m*~n f-itij'. /â¢â¬Â»Â£â¢Â« ...\ B ~P- C. ~-nd Tangential Sections of Pinus echinata, heterophylla, and glabra, showing Num3er and Distribution of Pith Rays and Proportion of Pith-ray Cells. A-C and F, Pinus heterophylla. 2), Pinus echinata. JS7, Pinus glabra. A~C, Sections of medullary rays; tr., traeheids;-p., parenchyma; C is a "double"n ray. In D-F histological details are omitted; they are camera drawings showing number and distribution of medullary rays, and
. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. m*~n f-itij'. /â¢â¬Â»Â£â¢Â« ...\ B ~P- C. ~-nd Tangential Sections of Pinus echinata, heterophylla, and glabra, showing Num3er and Distribution of Pith Rays and Proportion of Pith-ray Cells. A-C and F, Pinus heterophylla. 2), Pinus echinata. JS7, Pinus glabra. A~C, Sections of medullary rays; tr., traeheids;-p., parenchyma; C is a "double"n ray. In D-F histological details are omitted; they are camera drawings showing number and distribution of medullary rays, and also the proportion of the tracheitis to parenchyma in each ray, the former being: indicated by dots; r. d , transverse resin ducts; m. r., medullary rays. Magnification of originals: A-C\ 5?Q; D~F, *£; of illustrations: A-C, 3p; D-F, -",?â. 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 Fernow, B. E. (Bernhard Eduard), 1851-1923; United States. Forest Service. Washington, Govt. print. off.
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Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
