Child's Puzzle Helps Unlock the Secrets of Magnetism
For a few months in 1880, entire swaths of the United States succumbed to an addiction the likes of which had never been seen. It has become literally an epidemic all over the country, wrote The Weekly News-Democrat in Emporia, Kansas, on March 12, 1880. Whole cities are distracted, and men are losing sleep and going crazy over it. The epidemic spread to Europe and as far as Australia and New Zealand.