~Soil Requirements~--Black walnut grows best in valleys and bottom lands where there is a rich, moist soil but well drained. It does not generally grow on the higher elevations nor on wet bottom lands. It usually occurs as a scattered tree in hardwood stands and along roadsides, fence rows, and fence corners. ~Distribution and Growth~--The botanical range of this tree covers most of the eastern half of the United States. It is among the more rapid growing hardwoods. On good sites trees 10 years old will be about 20 feet high and in 40 years will reach 60 feet in height and 12 inches in diameter at breast height. According to Forest Survey figures, the estimated merchantable stand of walnut in Ohio in 1941 was 112,275,000 board feet while the cut during the same year was slightly over 3 million board feet. ~Pests~--The most serious pest is the walnut datana whose larvae eat the leaves. Other leaf-eating insects include the fall web worm and the hickory-horned devil. Several leaf spot diseases have attacked the leaves, also causing early defoliation. Leaf eating insects and leaf spot disease can be controlled by the application of one spray in June. This is composed of three pounds of arsenate of lead, ten pounds of powered Bordeaux mixture, and a good sticker in one hundred gallons of water. ~Selected Varieties~--Walnut trees vary greatly in the type of nut they produce. The most popular strains have been selected for propagation. The varieties which have been propagated by nurserymen are the Thomas, Ohio, Stabler, Ten Eyck, and Elmer Myers. Since the cost of grafted nut trees is rather high, many people are interested in planting the nuts of the better varieties for large scale planting. Seedling trees may be raised easily by anyone, whereas much skill and practice are required to produce grafted and budded trees. The degree to which the desirable characteristics of selected varieties are transmitted through seed is now being studied by the Ohio Agricultural Experiment Station. A list of commercial nut nurseries may be obtained by writing to Miss Mildred Jones, Secretary, Northern Nut Growers Association, Lancaster, Pennsylvania. ~References~--A few of the most outstanding publications on black walnut are listed below. 1. Black walnut for timber and nuts. Farmers' Bulletin No. 1392, U. S. Dept. of Agriculture, Washington, D. C. 2. Nut Growing in New York. Bulletin 573, College of Agriculture, Ithaca, New York. 3. Top-working and Bench Grafting of Walnut Trees. Special Circular 69, Ohio Agricultural Experiment Station, Wooster, Ohio. 4. Growing walnut for profit. The American Walnut Manufacturers Association, 616 South Michigan Avenue, Chicago 5, Illinois. Exhibits Gilbert Becker, Climax, Michigan. Crath strains of J. regia, hickory, black walnut kernels. Hebden H. Corsan, Hillsdale, Michigan. Cases of nuts, folders on nut planting for success. H. F. Stoke, Roanoke, Virginia.