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we owe the extension of the law of gravi-
tation, beyond the limits of the solar sys-
tem, to the whole universe. His observa-
tions were confirmed by F.G.W. Struve (born
1793, died 1864), who carried on the work
at Dorpat. But it was first to Savary,[13]
and later to Encke and Sir John Herschel,
that we owe the computation of the elliptic
elements of these stars; also the resulting
603
