Facts concerning the growth of trees in America are much needed for intelligent guidance in our forestry operations. The following figures are made by Mr. W. E. Clark, civil engineer, from trees growing on Mr. Jacob R. Shotwell's property at Rahway, New Jersey, planted in 1857:

"Norway Spruce, 47 feet high, 2.2 feet diameter, 38 feet spread of limbs. Silver Maple, 69 feet high, 2.45 feet diameter, 49 feet and 43 feet spread of limbs. Sugar Maple, 61 feet high, 2.2 feet diameter, 60 feet spread of limbs. Horse Chestnut, 40.3 feet high, 1.3 feet diameter, 24 feet spread of limbs".