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XIII.
The Relation of Comets to Meteors.
193
peak, there are about 100 or more particular centres in the heavens which are specially centres from which they seem to radiate; (4) the meteors coming from these centres are named
Fig 102.
_relatively_to_the_orbits_of_certain_planets.jpg)
orbit of the leonids on nov. 13 and of the comet of 1866 (i.) relatively to the orbits of certain planets.
by ugly fabricated names derived from the constellations in which the centres are situated; thus Leonids, Lyrids, Perseids, Quadrantids, and so on; (5) the term "shooting star" is an old-fashioned one which has almost gone out of use, having
