. Bulletin. Forests and forestry -- United States. THE IJREATHINl^ OF A TREE. 15 HOW THE TREE ERP^A'I'HES. Besides giviug oat oxygen iu assimilation, trees also take ill oxygen from the air through tlieir leaves, and through the minute openings in the bark called lenticels, such as the obh)ug raised spots or marks on the young. 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 United States. Division of Forestry. Washington :

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. Bulletin. Forests and forestry -- United States. THE IJREATHINl^ OF A TREE. 15 HOW THE TREE ERP^A'I'HES. Besides giviug oat oxygen iu assimilation, trees also take ill oxygen from the air through tlieir leaves, and through the minute openings in the bark called lenticels, such as the obh)ug raised spots or marks on the young. 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 United States. Division of Forestry. Washington : G. P. O.

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Keywords: ., bookpublisherwashingtongpo, booksubjectforestsandforestryunited