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" A similar root of an elm was recently dug up in Westfield, Mass., and presented to the College Museum by Mr. BH Averell. Prof. Stockbridge, last fall, washed out a root of common clover, one year old, growing in the alluvial soil near the Connecticut... "
Observations on the Phenomena of Plant Life: A Paper Presented to the ... - 第 5 頁
William Smith Clark 著 - 1875 - 111 頁
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Practical Farm Drainage: Why, when and how to Tile Drain, 第 1-2 篇

Charles Gleason Elliott - 1882 - 92 頁
...out a root of common clover, one year old, growing in the alluvial soil near the Connecticut river, and found that it descended perpendicularly to the .depth of eight feet.' Lucern roots are stated to reach a depth of twenty and even thirty feet. Alderman Mechi, in England,...
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Practical Farm Drainage: A Manual for Farmer and Student

Charles Gleason Elliott - 1908 - 188 頁
...out a root of common clover, one year old, growing in the alluvial soil near the Connecticut River, . and found that it descended perpendicularly to the depth of eight feet. Lucern roots are said to reach a depth of twenty, and even thirty, feet." Authentic examples of this...
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Annual Report of the Secretary of the State Pomological Society of ..., 第 4 卷

State Pomological Society of Michigan - 1875
...out a root of common clover, one year old, growing in the alluvial soil near the Connecticut River, and found that it descended perpendicularly to the...is the fact that the lower roots are either unable fco penetrate the subsoil or to find in it the requisite supplies of food. He also states that his...
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The Horticulturist and Journal of Rural Art and Rural Taste, 第 30 卷

1875
...out a root of common clover, one year old, growing in the alluvial soil near the Connecticut River, and found that it descended perpendicularly to the...of Tiptree hall, England, tells us that the reason that clover is usually so short lived, is the fact that the lewer roots are either unable to penetrate...
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