" A HINT FROM ASTRONOMY The physical evidence that our space is thus curved in higher space, some have considered astronomy to furnish in what is called the "negative parallax" of certain distant stars.

This celebrated star, first seen by Tycho Brahe in the constellation Cassiopeia, never changed its position, or presented the slightest perceptible parallax.

""The meridional observations of Mars in the Autumn of 1862 have been compared with those made at the Observatory of Williamstown, near Melbourne, Australia, and they give for mean solar parallax the value 8.932", exceeding the received value by about 1/24th part.

BESSEL, FRIEDRICH WILHELM, a Prussian astronomer of prominent ability, born at Minden; professor of Mathematics at Königsberg, and director of the Observatory; discoveredwhat was a great achievementthe parallax of the fixed star 61 Cygne; his greatest work, "Fundamenta Astronomiæ," on which he spent 10 years, a marvel, like all he did, of patient toil and painstaking accuracy (1784-1846).

The celebrated Dry-well, which was made to observe the earth's annual parallax, and for seeing the stars in the day-time, is situated near the south-east corner of the garden, behind the Observatory, but has been arched over, the great improvements in telescopes having long rendered it unnecesary.

This celebrated star, first seen by Tycho Brahe in the constellation Cassiopeia, never changed its position, or presented the slightest perceptible parallax.