Gravesande, Willem Jacob 's
,
An essay on perspective
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The PREFACE.
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Perſpective was not neglected. </
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ried the Matter farther than could have been
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reaſonably expected from one ignorant of
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Mathematicks; </
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for ſeveral Obſervations, which I my ſelf
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ſhould perhaps have never thought on.</
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