A substance is anhydrous if it contains no water, for example, salts lacking their water of crystallisation. The way of achieving the anhydrous form differs from one substance to another.
A partial solar eclipse at its peak at 3:37 p.m. in Mesa on Oct. 23, 2014. The eclipse was visible over most of North America and covered 44 percent of the Arizona sun. Michael Chow/The Republic.
For both Missouri and St. Joseph, the last total solar eclipse to touch each occurred June 16, 1806, at the future site of Rosecrans Memorial Airport, and totality lasted 3 minutes and 4 seconds.