Originally published in 1900‎,‎ this book presents a collection of fascinating lectures collated from the manuscripts of Professor John Couch Adams‎.‎ The lectures‎,‎ which were taught at the University of Cambridge between the years 1860‎-89‎,‎ aimed ‎'‎to illustrate geometrically the analytical processes‎'‎ of the Lunar Theory and ‎'‎render them more comprehensible‎'‎‎.‎ The book contains a total of eighteen lectures‎,‎ ranging from accelerations of the Moon relative to the Earth to the parallactic inequality‎,‎ all presenting the principal theorems from the turn of the century as well as in turn highlighting the tangible array of challenges still faced by physicists in the field‎.‎ This book will serve as a useful reference tool for researchers and students investigating the history of the Lunar Theory and will be of considerable value to anyone interested in physics‎,‎ cosmology and astronomy‎.‎