A short letter to the editor of the Commercial Review, dated New Orleans, October 26, 1846, from Wheelock S. Upton. He reports a seed-soaking solution, composed chiefly of blue stone (copper sulfate), that German farmers used on wheat, rye and tobacco seed against fly and worm. He suggests it can also protect cotton from the cotton caterpillar, says trials on Red River and in Iberville parish succeeded, and gives the cost as about one dollar per acre of seed.