In our article on podophyllum, we call attention to the fact that that plant can not easily be exterminated by the advance of agriculture. With hydrastis, however, the opposite is true; the plant disappears as soon as the ground is disturbed by the settler. Once plentiful along the Ohio river banks, it is now found only in isolated spots, having suffered extermination as fast as the woodland yielded to the pioneer's axe. At present the geographical center of the plant is around Cincinnati. But four states now grow sufficient hydrastis to make it profitable for gathering for commercial use. These are Ohio, Indiana, Kentucky, and West Virginia. There is one redeeming feature, however, in the fact that in the mountainous parts of the states in which it grows, it is not very likely to disappear soon. […] These virgin forests of the mountain contain an abundance of medicinal roots, among them hydrastis. […]
Four sentences omitted: two demean the people they describe, and the two that close the paragraph continue that description of them.