Read ENaG
Sorry, but it's totally pointless reading a book (ENaG) that was written 150 years ago by a guy who was
not a scientist of any sort, but who nonetheless proclaimed to have "proved" the earth was flat. (Its only interest value could be as a quaint historical but long outdated artifact.) Samuel Birley Rowbotham managed to expand a 16-page pamphlet written in 1849 into a 430 page book when he realised the potential profit margins of doing so. If nothing else, Rowbotham was the consummate 19th century travelling snake-oil salesman! He also charged scientifically ill-educated dupes sixpence (5 cents) a time to listen to him "preach" from hired halls and tents across the country.
Both astrophysics and geophysics have made massive, immeasurable advances in that ensuing 150 year period, and it'd be the height of ignorance to ignore those advances in favour of the poor understanding by a lay person, at the time, of the earth sciences. Whether or not one accepts Rowbotham's writings is really immaterial; if you were diagnosed with a life-threatening illness, would you refer to a medical textbook written in 1914 or one written in 2014?
It's also become increasingly obvious on this forum—simply by the number of times it's cited—that ENaG is the one and only document that the flat earthers can call upon to support their case. Note too that the round earthers can readily cite a multitude of documentary evidence to support the round earth model, some of it produced merely months ago. Why is it that the flat earthers cannot provide any supporting documentary evidence for a flat earth model? Would any rational thinker accept 150-year-old scientific documents as representative in any way of contemporary scientific opinion? Of course not.
And regardless, at the end of the day, the pseudo-scientific "research" and "evidence" and "conclusions" reported by Rowbotham were thoroughly debunked by individuals such as (legitimate) scientist Alfred Russel Wallace at the time, and more recently by physics professor Donald E. Simanek Ph.D of the Pennsylvania State University.
And for anybody interested, you can read Zetetic Astronomy: Earth Not a Globe [1881]
HERE