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SEVENTY-FI RST CONGR ESS . SESs . III . Cn. 278. 1931 . composition, action, and application of insecticides and fungicides, $128,400 . Plant dus t explo- Plant dust explosions and farm fires : For the investigation and sions, etc . Methods for prevent- development of methods for the prevention of farm fires and of ins, grain-dust, smut-dust, and other dust explosions not otherwise pro- vided for and resulting fires, including fires in cotton gins and cotton-oil mills, independently or in cooperation with individuals, associations, or corporations, $51,700 . Naval stores, investi- Naval stores investigations : For the investigation and demonstra- gations, etc' tion of i mprov ed me thod s or proce sses of p repar ing naval stores , the weighing, handling, transportation, and the uses of same, in cooperation with individuals and companies, including the employ- ment of necessary persons and means in the city of Washington and southern pine eregions .n elsewhere, $72, 306, of which $40, 000 shall be avail able for the esta b- lishment of a field laboratory for naval stores research work in the pine re gions o f the So uth, in cluding erectio n of bu ildings, on lan d owned by the United States or to be donated to the United States for that purpose . Soil types, composi- Soil chemical investigations : For chemical investigations of soil don, etc ., investiga- tions. types, soil composition, and soil minerals, the soil solution, solubility of soil, and all chemical properties of soils in their relation to soil formation, soil texture, and soil productivity, including all routine chemica l work i n conne ction wi th the soil su rvey, $4 2,760 . Physical productiv- Soil physical investigations : For physical investigations of the ity of soils, importa nt prop erties o f soil which d etermine produc tivity, such as moisture relations, aerations, heat conductivity, texture, and other physical investigations of the various soil classes and soil types, $18,660. Fertilizers . Fe rtilizer investiga tions : For inves tigat ions with in th e Uni ted States of fertilizers and other soil amendments and their suitabilty for agricultural use, $378,400 . v cooperative soilssur- Soil survey : For the investigation of soils, in cooperation with other branches of the Department of Agriculture, other departments of the Government, State agricultural experiment stations, and other State institutions, and for indicating upon maps and plats, by color- ing or otherwise, the results of such investigations, $328,705 . Soil bacter iology in-
S oil -ba cte rio log y i nve sti gat ion s : For soil-bac teriology investi g a- vestigations .
L , tions, including the testing of samples procured in the open market, of cultures for in oculating legumes, and if any such s amples are found to be impure, nonviable, or misbranded, the results of the tests may impsa umgtests of be published, together with the names of the manufacturers and of the persons by whom the cultures were offered for sale, $43,820 . Soil ferti lity . Soil-fertility investigations : For soil-fertility investigations into organic causes of infer tility and reme dial me asures, mainten ance of productivity, prop erties and composi tion of soil humus , and the trans- formation and formation of soil humus by soil organisms, $227,080 . tri Servicesin the Dis- Total, Bureau of Chemistry and Soils, $1,947,201, of which amount not to exceed $1,272,956 may be expended for personal services in the District of Columbia . Entomology Bur eau, General expenses . Investigations of in- sects, etc . BUREAU OF ENTOMOLOGY SALARIES AND GENERAL EXPENSES For necessary expenses connected with the investigations, experi- ments, and demonstrations in reference to the items hereinafter enu- merated for the promotion of economic entomology, for investigating th e history and habi ts of insects inj urious and benefic ial to agricul- tu re, horticulture, arboriculture, fo r studying insects affecting man and animals, and f or ascertaining th e best means of de stroying insects
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