Excerpt from Compendium of Astronomy: Containing the Elements of the Science, Familiarly Explained and Illustrated; Adapted to the Use of High Schools and Academies, and of the General Reader; A New and Greatly Improved Edition, Containing the Latest Discoveries
The extensive patronage which this work has enjoyed, both as a private manual, and as a text-book in the schools, lays the author under peculiar obligation to render it deserving of public favor. He has therefore, with much care and pains, prepared this revised edition, using his best endeavors to present to the learner, in a short compass, a clear, faithful, and comprehensive outline of the noble science of Astronomy. The earlier portions of the work, treating as they do of subjects which are in their nature of a fixed character, such as definitions and the doctrine of the sphere, have appeared to him susceptible of little improvement, and accordingly have been suffered to remain unchanged; but the latter portions, relating to the Planets, Comets, Fixed Stars, and Nebul?, have required to be entirely rewritten, in order to embrace those numerous and grand discoveries with which astronomy has been enriched within a few years past.
To render difficult subjects plain and intelligible to the young, has constituted with him the leading object of a life sedulously devoted to the instruction of youth, through the several gradations of the common-school, the academy, and the university. He would not, however, encourage any one to suppose, that he can make any valuable attainments in this profound science, without diligent study and close reflection. If any book on astronomy is very easy, it is because it is very superficial, and contains little worth knowing.
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