It is worthy of note that on the first appearance of an insect in any locality, they seem to increase in great numbers from year to year; but after this the numbers every year seem about the same. Mr. Moore, of Concord, Mass., has noticed of the Rose-bug: "As long ago as I can remember I saw them as thick as they are now. In 1823 John Lowell described an apple tree as covered with them, and about the same time Dr. Green, of Marshfield, gathered eighty in his hand, from a rose bush, at one grab." This is about the general experience.