geometrical exponent of fits of extraordinary atmo- trol. Lay an ordinary sized mirror, say twenty-four inches observation of the phenomenon, we find that it occurred when spheric refraction, to which he attributes the phenomenon of the sun was low; thus the observation made by Mr. Gresham the… … decreases, till at the zenith it is nothing. The rately still water without reflecting back to heaven | images of all things resting on its surface or about its edges the glass, at about its middle, a toy ship or boat with sails, varying amount of atmospheric refraction at the hori- made of paper,…
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