This classic book contains a comprehensive treatise on elementary celestial mathematics. The aim has been to present the work in a logical sequence, gradually progressing in complexity as the reader increases in confidence. Containing detailed explanations, helpful charts and diagrams, and a plethora of useful formulas, this text constitutes a must-have for those with an interest in the subject, and makes for a great addition to collections of allied literature. The chapters of this book include: Elements and Laws, Problems Treated, Enumeration of the Principle Elements, Enumeration of the Principles and Laws, Nature and the Laws of Motion, Remarks on the First Law of Motion, Remarks on the Second Law of Motion, et cetera. This book is being republished now complete with a new introduction on the history of astronomy.