Pee, Purple, Potions & Pills.

The article offers information on the origins of the pharmaceutical industry and role of dyes in the organic chemicals industry. It further discusses using dyes to stain microscope specimens to see the structures better, regarding different physical and chemical features of cells; use of mercury for treatment of various ailments including syphilis; and development of particle technology including achieving the right size and shape of crystals so that they dissolve at the right rate.