Dumesnil tells a French magazine that his moss is so powerful it must not come in contact with the roots at first, but some less powerful material must go between the roots and the moss when potted. Another fertilized moss is advertised in London as superior to the Dumesnil. We have not heard much of the moss recently. Fertilized moss has many merits, especially as a top dressing. The only disadvantage of a top dressing o" moss is, that it prevents the inexperienced from seeing when the plant needs water.