****two artificial spherical bodies****, upon the convex surfaces of which were delineated the countries, seas, and various portions of the earth's surface; the face of the heavens, the planetary revolutions, fixed stars, and other particulars.

Their principal use, besides serving as maps to distinguish the outward parts of the earth, and the situation of the fixed stars, was to illustrate and explain the phenomena arising from the annual revolution and the diurnal rotation of the earth around its own axis.  They are the noblest instruments for improving the mind, and giving it the most distinct idea of any problem or proposition, as well as enabling it to solve the same.  Contemplating these bodies, we are inspired with a due reverence for the Deity and his works, and are induced to encourage the studies of Geometry, Astronomy, Geography, and Navigation, and the arts and sciences dependent upon them, through which a more extensive knowledge of the mysteries of nature, and of the laws which govern the universe may be obtained; and by which throughout many ages, the initiated have been so greatly benefited.