in their welfare and reputation by the kindness with which he has always been ready to give that assistance-marked him out as the best adviser during the preparation of the work required; to him it has in all its stages been submitted, and to him must be attributed whatever merit its general conception and arrangement may possess. As the time, which has elapsed since the first communication on the subject of this course was made to me, may be considered unnecessarily long, I am desirous to state that although the wishes of the Marquis of Anglesey were conveyed to me at the end of October, 1847, it was not until the middle of May, 1849, that the various official difficulties which prevented the commencement of the work were removed, and its preparation authorized. 18th October, 1852. I remain, Your obedient Servant, H. D. HARNESS, Captain Royal Engineers. Expansions and Developments of Trigonometrical Expressions Construction of Trigonometrical Tables Definitions and First Principles The Right Angled Spherical Triangle The Oblique Angled Spherical Triangle Solution of Spherical Triangles The Area of a Spherical Triangle COORDINATE GEOMETRY OF TWO DIMENSIONS. |