A guide to the developments in scientific thinking that occurred during the seventeenth century. It is suitable for historians of astronomy, and researchers examining how scientific thought developed. "The letters will be of interest to all who care for the history of astronomy, and certainly no astronomical library would be complete without a copy ? The editors and publishers of this volume have rendered a truly great service to historians and are to be warmly congratulated."
-British Astronomical Association

"? a big and beautifully produced volume that not only whets a reader's appetite for volumes 2 and 3, but also stands as a fine tribute to Forbes's scholarship."
-Science

"This is a superb, scholarly book, and a major addition to the collection of primary references required by the astronomical historian. It is beautifully produced, skillfully annotated, well indexed, and contains useful glossaries of astronomical terms and biographical details."
-Observatory

"This is an absolute delight. You feel as though you are privy to the musings of a pioneering astronomer and to the daily gossip at one of the world's premier observatories."
-New Scientist

"We are left in a state of high anticipation for the next volume in this important series."
-Nature

"The volume's value is enhanced by an excellent glossary of technical terms, useful bibliographical notes, and an index ?Willmoth has written an excellent introduction ?These letters provide an exciting view of eighteenth-century scientific politics ?"
-Katherine Neal, University of Sydney