1884 paint factory. These illustrations depict the grinding and combining of various pigments and paint solids. Many were toxic; lead, arsenic, and cyanide among other substances were used to color and modify the toxic brew. The painter would stir in linseed oil, mineral spirits (kerosene) and Japan Dryer at the job site to make it into paint. Note the lack protective machinery devices. Lots of lost limbs and lives were mixed into 20th century progress. Lots.