A popular inquiry into the moon's rotation on her axis
A polemical astronomy tract by Johannes von Gumpach, published in London by Bosworth and Harrison in 1856, arguing against the accepted account of the Moon's rotation for general readers and the scientific press of the day. The scanned pages carry no diagrams, only mid-Victorian book typography: justified Roman text with italic emphasis, algebraic notation such as E O C and primed letters M, M', and quoted correspondence set in smaller type, useful as period text texture and letterform reference.

