Thomas Proctor Hall (1858–1931) was a Canadian physician who wrote mathematics, chemistry, physics, theology, and science fiction. T. Proctor Hall was born October 7, 1858, at Hornby, Canada West. He attended Woodstock College and University of Toronto where in 1882 he obtained a bachelor's degree in chemistry. For two years he was a fellow at University of Toronto, then he served as science master in Woodstock, Ontario, for five years. He proceeded to Illinois Wesleyan University for his doctorate. He then studied at Clark University where W. E. Story lectured on higher-dimensional space. Hall contributed to the topic with his article "The projection of fourfold figures upon a three-flat". He wrote, "Rotation is essentially motion in a plane, and when another dimension is added to the rotating body, another dimension is also added to the axis of rotation." From 1893 to 96 he was professor of natural science at Tabor Academy, Massachusetts. Albert A. Michelson was teaching physics at Clark University. Examining methods of determining surface tension, in 1893 Hall published the article "New methods of measuring surface tension of liquids". The following year he contributed an article on stereochemistry to Science. And the next year he wrote on gravitation including the speculative kinetic gravity. From 1897 to 1901 he taught physics in Kansas City. T. Proctor Hall became a medical doctor in 1902 after study in Chicago at the National Medical College. At the Louisiana Purchase Exposition in St. Louis in 1904 he spoke on "Principles of Electro-therapeutics" at the International Electrical Congress held in connection with the Exposition. From 1902 to 5 he was editor of American X-ray Journal. In 1905 Hall relocated to Vancouver, British Columbia, where he practiced medicine as Dr. Thomas P. Hall. He was a proponent of heliotherapy and wrote, "Sunshine has been used for ages in the cure of disease; and sunshine is only a very narrow range of ether waves. Now that the fuller range of ether waves is coming under control, we may surely expect to obtain a large increase of power over misfortune and disease," in a science fiction story. T. Proctor Hall died in 1931. Source: Wikipedia (en)