Astronomical Investigations: The Cosmical Relations Of The Revolution Of The Lunar Apsides is a book written by Henry F. A. Pratt in 1865. The book explores the relationship between the revolution of the lunar apsides and cosmical phenomena. It discusses the various theories and observations made by astronomers, including the changes in the moon's orbit, the effect of the planets on the moon's motion, and the impact of the moon's motion on the tides. The book also includes mathematical calculations and diagrams to support its arguments. Overall, Astronomical Investigations is a comprehensive study of the lunar apsides and their significance in the wider [...] scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.