Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 29
ilosophical terms and expressions,which are constantly occurring in the discussion of as-tronomical subjects. These must be mastered in orderto obtain a clear understanding of the science, and yetthey are by no means difficult to comprehend. Themost important of these are explained in the… … AN ANGLE. 1. TTie stars are frequently called orbs, from their round figures. OrAi*,(Latin.) a circle. In what order are the subjects of astronomy to be studied ? In learning fcSfronom?u-hat is it ner^ssary for the pupil to do at the outset ? What is an angle 1 o* 18 ASTRONOMY. line AB meets the…
Astronomy
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