Their main aim seems to be to reduce Copernicus to the grovelling level of Osiander, making his discovery a mere hypothesis; but occasionally they require a virtual giving up of the whole Copernican doctrine--e.g., "correction" insisted upon for chap.
viii, p.6.For a scholarly account of the relation between Prohibitory and Expurgatory Indexes to each other, see Mendham, Literary Policy of the Church of Rome; also Reusch, Index der verbotenen Bucher, Bonn, 1855, vol.ii, chaps i and ii.

For a brief but very careful statement, see Gebler, Galileo Galilei, English translation, London, 1879, chap.

i; see also Addis and Arnold's Catholic Dictionary, article Galileo, p.8.
There was, indeed, in Europe one man who might have done much to check this current of unreason which was to sweep away so many thoughtful men on the one hand from scientific knowledge, and so many on the other from Christianity.

This was Peter Apian.

He was one of the great mathematical and astronomical scholars of the time.