A prominent scientific magazine recently expressed its regret that scientific men should send valuable matter to the miserable agricultural and horticultural magazines, instead of to leading serials, such probably as itself. The horticulturist can retaliate by regret-ing that much that is published in leading scientific serials ever appears at all. Just before us is a paper in the Popular Science Monthly on changing the colors of flowers. We are told that black Dahlias can be produced by watering with iron salts, and that blue Hydrangeas can be had from pale red ones by manuring with iron ochre, or watering with a dilute alum solution. Now these miserable, ignorant and contemptible horticulturists know that this is all nonsense. Potted in precisely the same soil a Hydrangea will have plants all rose color and others all blue. Again, it is not uncommon to find separate branches on a plant with wholly blue flowers, though most of the others have pink. The horticulturist who has had the most experience in these matters says he knows no more how these changes occur than why red and blue tints are often in the same flowers of other plants.