55 STAT.] 77TH CONG. , 1ST SESS.-CH. 267-JULY 1, 1941 BUREAU OF PLANT INDUSTRY SALARIES AND EXPENSES For the investigation of fruits, fruit trees, grain, cotton, tobacco, vegetables, grasses, forage, drug, medicinal, poisonous, fiber, and other plants and plant industries, and of soils and soil-plant relationships, in cooperation with other branches of the Department, the State experi- ment stations, and practical farmers; for the erection of necessary farm buildings: Provided, That the cost of any building erected, except head houses connecting greenhouses, shall not exceed $2,500; and for the employment of persons and means in the city of Washing- ton and elsewhere required for the investigations, experiments, and demonstrations herein authorized, as follows: General administrative expenses: For necessary expenses for gen- eral administrative purposes, including the salary of chief of bureau and other personal services in the District of Columbia, $209,942. Arlington Farm: For continuing the maintenance of a general experiment farm and agricultural station on the Arlington estate, in the State of Virginia and in the vicinity of Beltsville, Maryland, in accordance with the provisions of the Act of Congress approved April 18, 1900 (31 Stat. 135, 136), as amended by the Act of October 9, 1940 (Public, Numbered 812), $49,414. Cereal crops and diseases: For the investigation and improvement of cereals, including corn, and methods of cereal production and for the study and control of cereal diseases, for the investigation of the cultivation and breeding of flax for seed purposes, including a study of flax diseases, for the investigation and improvement of broomcorn and methods of broomcorn production, and for deter- mining the distribution of weeds and means for their control, $576,600, of which $40,000 shall be available for investigations con- cerning the control and eradication of whitetop, bindweed, and other noxious weeds. Cotton and other fiber crops and diseases: For investigation of the production of cotton and other fiber crops, including the im- provement by cultural methods, breeding, and selection, fiber yield and quality, cotton soil-fertility, and the control of diseases, $443,535, of which sum not less than $14,700 shall be used for experimenting in Sea Island cotton, including its hybridization with other varieties. Drug and related plants: For the investigation, testing, and improvement of plants yielding drugs, spices, poisons, oils, and related products and byproducts, $48,500. Dry-land agriculture: For the investigation and improvement of methods of crop production under subhumid, semiarid, or dry- land conditions, $229,228: Provided, That no part of this appro- priation shall be used for the establishment of any new field station. Forage crops and diseases: For the investigation and improve- ment of forage crops, including grasses, alfalfas, clovers, soybeans, lespedezas, vetches, cowpeas, field peas, and miscellaneous legumes; for the investigation of green-manure crops and cover crops; for investigations looking to the improvement of pastures; and for the investigation of forage-crop diseases and methods of control, $304.000. Forest pathology: For the investigation of diseases of forest and ornamental trees and shrubs, including a study of the nature and habits of the parasitic fungi causing the chestnut-tree bark disease, the white-pine blister rust, and other epidemic tree diseases, for the purpose of discovering new methods of control and applying methods 419 Post, p. 832 . Investigation c fruits, etc. Farm buildings. Proviso. Cost limitation. Arlington Farm. 54 Stat. 1030, 1046. }'ost, p. 749. Proviso. Of
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