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Illustrative descriptions of changes due to scientific research
rl Development of new branches of old industries
2 other sections not shown
aluminum American women appendix Table automatic automatic switching system bakelite breadwinning women bulletin celluloid cellulose Census of electrical Census of Manufactures cent increase century changes chemist cigar commercial common battery cotton crease Actual number discovery effects employees Year Adult employment opportunities fact fibers field filaments Fourteenth census glass industry Govt growth industry and commerce invention lamps large number long-distance machine machinery magneto male labor ment metal methods mills molybdenum Morse characters National Civic Federation natural resources number of women number Per cent open to women opportunities of American opportunities of women paper phenol ployees Per cent processes Pupin coils pyralin radio rags raw materials rayon relative number result ribbon rubber scientific research sheets substances supply switchboard synthetic plastics thread tion to-day tobacco total number tungsten U. S. Bureau U. S. Congress wage-earning women ware woman labor women and girls women employed wood pulp