Block of opium resin, mounted on a display board describing the product, its effects and its uses. sample; controlled drug; opium 1901-1938
Set of absorption spectra by John Browning, 63 Strand, London, England, and series of liquid cells and glass containers, 1860-1870. Set of absorption spectra by John Browning 1860-1870
Glass container with dried leaves of tea plant, glass plate with other materia medica Glass container with dried leaves of tea plant 1938-1940
Glass container with dried leaves of mate tea, mounted on glass plate with other materia medica, tea from South America Glass container with dried leaves of mate tea 1938-1940