_Agricultural experiment station_: Bul. 71, by Prof. F. C. Burtis and L. A. Moorhouse.--This crop is being grown in every county in Oklahoma and in some sections, a fair acreage is present. From many fields as large yields are obtained as are produced any place else in the United States without irrigation. On the uplands in Oklahoma, as elsewhere, the returns vary. Where the subsoil is hard and impervious, the yields are quite meager under unfavorable climatic conditions and the crop needs considerable nursing such as disking and harrowing, to keep the crab grass from taking the field in a few years. On these upland soils with the hardpan subsoils which grow cowpeas to perfection, the farmer who is not willing to inform himself about proper methods and to give his alfalfa fields much attention and care, should grow cowpeas instead. But as has been indicated before, alfalfa is being grown on such soil successfully and profitably, but only in small areas. The soil of the experiment station farm at Stillwater, on which the following yields of alfalfa were obtained is a clay loam underlaid by a very stiff, impervious subsoil of a hardpan nature. Yields of Field F, containing about four acres; cured hay for the season. 1902--1.76 tons hay per acre in 5 cuttings. 1903--1.23 tons hay per acre in 5 cuttings. 1904--3.13 tons hay per acre in 4 cuttings. 1905--3.13 tons hay per acre in 5 cuttings. Average for four years, 2.31 tons of hay per acre. In the spring of 1904 the field received an application of barnyard manure at the rate of 15 tons per acre. Every season, the field was disked from three to four times and harrowed. During 1903 and 1904, web worms damaged the crop. Yields of Plats 1, 2, 3, and 4, Field E. The plats are on similar soil to that of Field F and have been handled about the same as that field. The yield is given for all the plats together. 1902--2.67 tons hay per acre. 1903--3.27 tons hay per acre. 1904--3.31 tons hay per acre. Average for three years, 3.08 tons of hay per acre. Yield of Field H, containing about five acres: 1902--4.20 tons hay per acre in 5 cuttings. 1903--2.88 tons hay per acre in 5 cuttings. 1904--2.12 tons hay per acre in 5 cuttings. 1905--2.27 tons hay per acre in 5 cuttings. Average for four years 2.69 tons per acre.