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The Jeffersonian cyclopedia;

a comprehensive collection of the views of Thomas Jefferson classified and arranged in alphabetical order under nine thousand titles relating to government, politics, law, education, political economy, finance, science, art, literature, religious freedom, morals, etc.;

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598. ASTRONOMY, Solar eclipse.—
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598. ASTRONOMY, Solar eclipse.—

We were much disappointed in Virginia generally
on the day of the great eclipse, which proved to
be cloudy. In Williamsburg, where it was total,
I understand only the beginning was seen. At
this place, (Monticello,) which is latitude 38°
8′ and longitude west from Williamsburg, about
1° 45′, as is conjectured, 11 digits only were
supposed to be covered. It was not seen at all
until the moon had advanced nearly one-third
over the sun's disc. Afterwards it was seen at
intervals through the whole. The egress particularly
was visible. It proved, however, of
little use to me, for want of a time piece that
could be depended on.—
To David Rittenhouse. Washington ed. i, 210. Ford ed., ii, 162.
(M. July. 1778)