Zetetic Astronomy is a classic 1881 volume on Flat Earth theory that gives a fascinating introduction to zetetic astronomy and the work of Samuel Birley Rowbotham. What if the Earth isn't a globe like we've been told? What if, instead, it is an enclosed plane surrounded by a wall of ice with the North Pole at its centre? Writing under the pseudonym of Parallax, Samuel Birley Rowbotham breaks down his alternative ideas...