Color plate illustrates the process of refining sulfur. As seen on the left side of the illustration, crude sulfur is heated over a coal fire which produces a sulfur vapor. This vapor passes into a stone or brick…
- Part of Isotopes
Mass spectra illustration depicts an analysis of elements including mercury, boron, bromine, sulphur, and phosphorus.
Digitized in entirety, this work on isotopes covers topics including radioactive isotopes, positive…
General view of raw material and manufacturing facilities used for the production of lime sulfur at an unidentified Dow Chemical Company plant. Beginning in 1907, Herbert Dow marketed lime sulfur, also known as calcium…