the orbit of the earth, within _twenty thousand miles of its track, and but about one month before the earth would have arrived at the same spot!_ This was shooting close to the bull's-eye! He estimated that it would lose nearly ten days on its return trip, through the retarding influence of Jupiter and Saturn; but, if it lost forty days instead of ten, what then? But the comet came up to time in 1832, and the earth _missed it by one month_. And it returned in like fashion in 1839 and 1846. But here a surprising thing occurred. _Its proximity to the earth had split it in two_; each half had a head and tail of its own; each had set up a separate government for itself; and they were whirling through space, side by side, like a couple of race-horses, about sixteen thousand miles apart, or about twice as wide apart as the diameter of the earth. Here is a picture of them, drawn from life. ### BIELA'S COMET, SPLIT IN TWO, (From Guillemin's "The Heavens," page 247.) {p. 410} Did the Fenris-Wolf, the Midgard-Serpent, and the Dog-Garm look like this? In 1852, 1859, and 1866, the comet SHOULD have returned, but it did not. It was lost. It was dissipated. Its material was banging around the earth in fragments somewhere. I quote from a writer in a recent issue of the "Edinburgh Review": The puzzled astronomers were left in a state of tantalizing uncertainty as to what had become of it. At the beginning of the year 1866 this feeling of bewilderment gained expression in the Annual Report of the Council of the Royal Astronomical Society. The matter continued, nevertheless, in the same state of provoking uncertainty for another six years. The third period of the perihelion passage had then passed, and nothing had been seen of the missing luminary. But on the night of November 27, 1872, night-watchers were startled by a sudden and a very magnificent display of falling stars or meteors, of which there had been no previous forecast, and Professor Klinkerflues, of Berlin, having carefully noted the common radiant point in space from which this star-shower was discharged into the earth's atmosphere, with the intuition of ready genius jumped at once to the startling inference that here at last were traces of the missing luminary. There were eighty of the meteors that furnished a good position for the radiant point of the discharge, and that position, strange to say, was very much the same as the position in space which Biela's comet should have occupied just about that time on its fourth return toward perihelion. Klinkerflues, therefore, taking this spot as one point in the path of the comet, and carrying the path on as a track into forward space, fixed the direction there through which it should pass as a 'vanishing-point' at the other side of the starry sphere, and having satisfied himself of that further position he sent off a telegram to the other side of the world, where