Excerpt from Plane and Spherical Trigonometry, Vol. 3
As indicated in the original Preface, this treatise in the first instance was intended to serve as an introduction to the study of Navigation and Nautical Astronomy for the junior officers under training in H. M. Fleet.
Since, however, it has had the good fortune to secure a somewhat more extended circulation, the Author takes advantage of the production of the fourth edition to largely supplement the number of examples, both theoretical and practical, so that while more fully meeting the requirements of naval students, the work may at the same time be rendered more complete in itself, and therefore more available for general purposes.
The now examples, to the number of nearly three hundred and fifty, will be found in an Appendix at the end of the volume. They have been selected from the papers set in examinations held under the direction of the Royal Naval College during recent years, and will, it is hoped, afford a sufficient field of exercise for the student in all branches of the subject.
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