
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original...

This scientific treatise provides detailed instructions and practical methods for finding longitude at sea or land. With new tables and various techniques for determining latitude and compass variation, this book is a valuable resource for navigators and explorers. This...