 | 1864 - 940 páginas
...sufficiently show how vast is the amount of water that is drained off from sea and land by evaporation. 1 The Washington elm at Cambridge, a tree of no extraordinary size, was Rome years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred... | |
 | Asa Gray - 1857 - 264 páginas
...of surface presented by a tree in full leaf is much larger than one would be apt to suppose. Thus, the Washington Elm at Cambridge — a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000 square feet, or about five acres, of foliage. 132.... | |
 | Harland Coultas - 1859 - 204 páginas
...and the amount of leaf-labor necessary to rear such vast, noble, and enduring vegetable monuments ? " The Washington Elm, at Cambridge — a tree of no...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred thousand square feet, or about five acres of... | |
 | James Samuelson, Henry Lawson, William Sweetland Dallas - 1863 - 654 páginas
...growth, and the amount of leaflabour necessary to rear such lofty and enduring vegetable monuments ? The Washington elm at Cambridge — a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred thousand square feet or five acres of foliage.*... | |
 | Harland Coultas - 1863 - 200 páginas
...and the amount of leaf-labor necessary to rear such vast, noble, and enduring vegetable monuments ? " The Washington Elm, at Cambridge, — a tree of no...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred thousand square feet, or about five acres of... | |
 | 1864 - 922 páginas
...sufficiently show how vast is the amount of water that is drained off from sea and land by evaporation. 1 The Washington elm at Cambridge, a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred thousand square feet, or about five acres of... | |
 | George Perkins Marsh - 1864 - 592 páginas
...the foliage of grasses, and other small vegetables, and on other objects of similar form and con* " The Washington elm at Cambridge — a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of two hundred thousand square feet, or about five acres of... | |
 | Asa Gray - 1868 - 660 páginas
...of surface presented by a tree in full leaf is much larger than one would be apt to suppose. Thus, the Washington Elm at Cambridge — a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000 square feet, or about five acres, of foliage. 132.... | |
 | Asa Gray - 1869 - 1034 páginas
...of surface presented by a tree in full leaf is much larger than one would be apt to suppose. Thus, the Washington Elm at Cambridge — a tree of no extraordinary...some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000 square feet, or about five acres, of foliage. 132.... | |
 | Asa Gray - 1869 - 644 páginas
...of surface presented by a tree in full leaf ia much larger than one would be apt to suppose. Thus, the Washington Elm at Cambridge — a tree of no extraordinary size — was gome years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000... | |
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Thus, the Washington Elm at Cambridge — a tree of no extraordinary size — was some years ago estimated to produce a crop of seven millions of leaves, exposing a surface of 200,000 square feet, or about five acres, of foliage. 
