 | United States. National Waterways Commission - Inland navigation - 1912 - 594 pages
...determined. Allowing 15 per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
 | United States - 1912 - 598 pages
...determined. Allowing 15 per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth. of soil has a bearing... | |
 | Economics - 1915 - 936 pages
...determined. Allowing 15 per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
 | United States. Forest Service, Raphael Zon - Forest influences - 1927 - 120 pages
...determined. Allowing 15 per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
 | United States. Congress. House. Committee on Flood Control - Flood control - 1928 - 1034 pages
...the air-dried spruce nml beech humus were found to have a retentive capacity of approximately 415.44 and 22.2 tons of water per acre, respectively. This...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
 | United States. Congress. House. Committee on Flood Control - Flood control - 1928 - 1042 pages
...determined. Allowing 15 per cent for excess moisture content of air-dried over oven-dried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
 | United States - 1929 - 826 pages
...the remaining vegetation. Such erosion is rare where the litter cover is protected and maintained 03 it was found that the spruce-needle humus contained,...equivalent to rainfalls of 0.41 inch and 0.2 inch, respectively.2 The forests of the Mississippi Kiver, for the most part, have been greatly abused. Fire... | |
 | Forests and forestry - 1920 - 748 pages
...determined. Allowing 15_ per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have...acre for spruce and 712 cubic feet for beech humus, equivalent to a rainfall of 0.41 inch and 0.2 inch, respectively. The depth of soil has a bearing upon... | |
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C.) humus per 2| acres was determined. Allowing 15 per cent for excess moisture content of air-dried over ovendried humus, the air-dried spruce and beech humus were found to have a retentive capacity of approximately 46.44 and 22.2 tons of water per acre,... 