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The page has significant water staining and fading, rendering much of the printed text difficult to read. There is also a handwritten note in the right margin.
Christiani Hugenii Const. F. Astroscopia compendiaria, 1775.
[The majority of the printed text is heavily faded and obscured by water damage. The following is a partial reconstruction of the visible characters.]?
... HUGENIUS'S ASTROSCOPIA, ...
... in ... per ... seen ...
... ratio ... in ... telescope ...
... feet ... three hundred ... from ...
... length ...
[Several lines of text are illegible due to staining]?
This, however, has its own laws, by which, if correctly ... gathered.
A small, faded printer's ornament or tailpiece is visible at the bottom center of the page.