The wonders of the heavens, being a popular view of astronomy, including a full illustration of the mechanism of the heavens; embracing the sun, moon, and stars, with descriptions of the planets, comets, fixed stars, double stars, the constellations, the galaxy, or milky-way, the zodiacal light, aurora borealis, or norhtern lights, meteors, clouds, falling stars, aërolites, &c (1837)
Bradford, Duncan. [from old catalog] · Boston, American stationers company · leaf 98
swing clear of contact with the agate plate in thehighest latitude at which it is intended to use theinstrument. Then, if smallweights be added cautious-ly, it may be made to de-scend till it just grazes theagate, a contact which canbe made with the utmostimaginable delicacy. Letthese weights be…
Astronomy
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