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History

A glow-in-the-dark world

A short notice in the Phrenological Journal from April, 1879, reports on the self-luminous properties of calcium sulfide. A Prof. Morton from the Stevens Institute of Technology had analyzed the material painted onto the faces of self-luminous clocks and discovered that it was just a “sulfide of calcium.” The compound absorbs light when exposed to […]

Categories
History

Anti-Smoking, ca. 1879

In 1879 the Phrenological Journal published two short anti-smoking reports. The first, in February, purportedly summarized an article in the British Medical Monthly: “What Smoking does for Boys.” Apparently a physician concerned by the number of boys under 15 he saw smoking, decided to see if he could document the health issues related to smoking. […]