A correspondent writing from Washington Territory, says the Alnus Oregona is an excellent timber tree there. It grows rapidly, makes splendid fuel, and is valuable for charcoal. It is also extensively used by cabinet makers, being almost the only wood used for bent work in their business. Without giving its particular uses he also speaks highly of the Acer macro-phyllum as a useful forest tree. We have heard before of its extreme beauty in the forests of that Territory, and the trees growing up in the Eastern States show its ornamental character.