Mr. F. W. Woodward, of Eau Claire, Wis., well-known to our readers as an occasional correspondent and former proprietor of the N. Y. Horticulturist, has a farm in Minnesota, on which he has made some valuable forestry experiments. He has already 38 acres, and will plant in the spring 5 acres more. These will be chiefly of Green ash, which he finds one of the best for that high northern latitude. White ash does fairly well, but one season when they were weakened by a summer drouth of three months, they were injured the following winter. This has been frequently noted in lower and more favorable latitudes, that a very light frost will kill a plant that has been summer weakened, though after favorable summers they might have endured the lowest temperature of that region. The White ash, cut down by the winter of 1883, made a growth of 3 to 4 feet from the ground, and proved quite hardy the winter following.

At Eau Claire, Wisconsin, which is in 440, a high northern latitude, and the thermometer sometimes going 450 below zero, a White ash planted in the spring of 1884, is now 7 feet high, and 2 inches in diameter; a Catalpa speciosa planted in 1884, 7 feet high, and 2 1/2 inches in diameter. The ends of the shoots were killed three inches, but they will shoot again and make straight stems. Norway spruce made no growth last summer, having been severly injured during the winter previous.

Gentlemen like Mr. Woodward, who plant, and intelligently watch results, are benefactors in many more aspects than in the actual forests produced. They give us actual facts to work on.