Col. Wilkins, of Maryland, is sure that an aphis causes the yellows in the peach. The peculiar process by which this cause was traced to this effect, we have not had described to us.

Polygonum amphibium for Tanners, - Paragraphs have been going the rounds that this plant is found to make first-class leather. We should be favored if any of our readers can tell us what sort of leather it will make? We have heard that the Illinois factory where it was worked up is being offered as a woolen mill, "because the Polygonum cannot be had in quantity,-" but that is a poor reason, when the plant could be so easily cultivated. What is its value?