Vocational education, hearings on H. 23581 [for cooperation with States in promoting instruction in agriculture, trades, and industries, and home economics in secondary schools, in preparing teachers for these vocational subjects in State colleges of agriculture and mechanic arts, in State normal schools, and in other training schools for teachers supported and controlled by the public, in maintaining extension departments of State colleges of agriculture and mechanic arts, and in maintaining branches of State experiment stations], Apr. 23-26, 1912.