680 FIFTY-NINTH CONGRESS. Sess. I. Ch. 3913. 1906. messenger, four hundred and eighty dollars; one photographer or clerk, nine hundred dollars; one assistant photograp er, six undred dollars; one illustrator or clerk, nine hundred dollars; one carpenter, nine hundred dollars; one carpenter, eight hundred and forty ollars; two gardeners or assistants, at one thousand dollars each, two thousand dollars; four gardeners, at nine hundred dollars each, three thousand six hundred dollars; two gardeners, at eight hundred and forty dollars each, one thousand six hundred and eighty dollars; four gardeners, at seven hundred and eighty dollars each, t ree thousand one hundred and twent dollars; one gardener, six hundred dollars; one gardener, seven hundred and twenty dollars; two gardeners, at Six hundred and sixt * dollars each, one thousand three hundred and twenty dollars; one skilled laborer, nine hundred dollars; one dpainter, eight hundred and forty dollars; two plumbers, at eight hun red and forty dollars each, one thousand six hundred and eighty dollars; three firemen, at Seven hundred and twenty dollars each, two thousand one hundred and sixty dollars; two clerks or messengers, at eight hundred and forty dollars each, one thousand six hundred and eighty dollars; three skilled labor- _ ers, at seven hundred and twenty dollars each, two thousand one hundred and sixty dollars; three skilled laborers, at six hundred and sixty dollars each, one thousand nine hundred and eighty dollars; six skilled laborers, at six hundred dollars each, three thousand six hundred dollars; one messenger, six hundred and sixty dollars; three messengers, at six hundred dollars each, one thousand eight hundred dollars; three watchmen, at seven hundred and twenty dollars each, two thousand one hundred and sixty dollars; two watchmen, at six hundred dollars each, one thousand two hundred dollars; five skilled laborers or messengers, at four hundred and eighty dollars each, two thousand four hundred dollars; two messenger boys, at three hundred and sixty dollars each, ‘ seven hundred and twenty dollars; one messenger boy, three hundred dollars; in all, one hundred and sixty-three thousand and sixty dollars. gsyérgéacgggnws- GENERAP nxraxsns, BUREAU or PLANT Ixnusrnrz To investigate ' fruits, fruit_trees, gram, cotton, tobacco, vegetables, grasses, forage, drug; medicinal, poisonous, fiber, and other plants and plant industries, in cooperation with other branches of the Department, the State experiment stations, and practical farmers; to study plant and orchard diseases and demonstrate the treatment of same; to study plant physiology in relation to crop production; to originate and improve crops by breeding and selection; to investigate and encourage the adoption of improved methods of farm managementand farm practice; to investigate the feeding value of farm crops and the use of fertilizers; to investigate the causes of decay in forest timber and timber used for construction _ purposes, and to devise means for preventing the decay of the same; to investigate the practical application in agriculture of the fixation of atmospheric nitrogen by bacteria and other microorganisms in soils and in the root tubercles of leguminous and other plants; to cultivate and distribute these nitrogen lixers; to study and find methods for preventingalgal and other contaminations of water sup lies; to carry on special investigations of the conditions of grain procliiction, handling, grading, and transit, and of the means of improving the same; to model fruits, vegetables, and other plants, and furnish duplicate models to the experiment stations of the several States, as far as found . practicable; t0_ mvestigate the methods of harvesting, packing, stor- 1I1g, and slnpping fruits and vegetables, and for experimental shipments of fruits and vegetables within the United States and to forei countries; to cultivate and care for experimental gardens and ground; manage and maintain conservatories, greenhouses, and plant and fruit m . experi- propagatinghouses; to enable the Secretary of Agriculture to continue the necessary improvements to establish and maintain a general experimental farm and agricultural station on the Arlington estate, in the
