Page 507 - 89 history of astronomy_opt
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though sometimes blurred by mist in the
local winter. A spot sketched by Huyghens
in 1672, one frequently seen by W. Her-
schel in 1783, another by Arago in 1813,
and nearly all the markings recorded by
˜
Beer and MAdler in 1830, were seen and
drawn by F. Kaiser in Leyden during seven-
teen nights of the opposition of 1862 ( Ast.
Nacht. , No. 1,468), whence he deduced the
507
