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{{Short description|1774 attempt to measure the Earth's average density}} ...nducted in the summer of 1774 around the Scottish [[Mountains and hills of Scotland|mountain]] of [[Schiehallion]], [[Perthshire]]. The experiment involved mea ...

{{Year in various calendars|year={{CURRENTYEAR}}}} ...ption, in that it uses the [[solar Hijri calendar]].}} It went into effect in October 1582 following the [[papal bull]] {{Lang|la|[[Inter gravissimas]]}} ...