... Studies in vocational diseases
A U.S. Public Health Service bulletin (Public Health Bulletin no. 71, 1915) by Joseph W. Schereschewsky and Davis H. Tuck, printed by the Government Printing Office for industrial hygienists and factory inspectors studying working conditions in textile mills. The plates are Bureau of Standards photometric test sheets: polar coordinate grids of concentric circles and radial spokes, overlaid with looping candlepower distribution curves, small reflector cross-sections, and columns of typewritten test data, useful as ready-made radial grids, technical line texture, and annotated diagram layouts.
