Forestry Quarterly

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: above standards. But if tamarack in its native sites grows to be 35 to 75 feet tall at 100 years, varying in this with the quality of the soil, drainage, and if Jack pine fits into this same group, it is hard to see why in such classification of mere dimension we might not have some simplicity and...
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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: above standards. But if tamarack in its native sites grows to be 35 to 75 feet tall at 100 years, varying in this with the quality of the soil, drainage, and if Jack pine fits into this same group, it is hard to see why in such classification of mere dimension we might not have some simplicity and uniformity and use the same foot rule in gauging any particular tract of land, whether swamp with tamarack or poor sand stocked with Jack pine. However, all this is for the future and the important thing is to get a measure which the forester can use when he is asked to survey a tract of timber land. ADDENDA By H. A. Parker' The above data have even a greater content for the purpose in hand than that utilized by Professor Roth. It is the purpose of this addition to bring out more fully the close relationship of height and volume, and especially the interesting volume-height relation of one genus, the pines, so widely distributed as the Scotch pine, the White pine, the Loblolly and Shortleaf pines, as appears from the following tabulation: (1)(2)(3)(4)(5) Germany Schivappach Margolin Sterrett Mattoon (1888)(1908)(1910)(1914)(1915) Scotch Pine Scotch Pine White Pine Loblolly Pine Shortleaf Pine Aged Aged Aged (Peeled) Aged Site 100 Years 100 Years 90 Years 50 Years 80 Years I100100100 (100)100100II798587 (79)7979III606972(60)6157IV4355 . . V2943., . .. .I n100 88 75 60100 87 73100 (100) 96 (87) 91 (76)100 84 69100 88 74inIV V4558 43 PINES Relative Values?Volume Relative Values?Corresponding Heights 1 Student, Faculty of Forestry, University of Toronto. The first data of Schwappach's were gathered tinder a very different thinning practice than the later ones, yet the relative heights were not far different, being just two points higher in the less severely thinne...