"Among the innumerable stars of all magnitudes, from the ninth downwards, which at various times were seen through it, and some extremely near to the nucleus (though not _exactly on it_) there never appeared the least ground for presuming any extinction of their light in traversing it. Very minute stars indeed, on entering its brightest portions, were obliterated, as they would have been by an equal illumination of the field of view; but stars which before their entry appeared bright enough to bear that degree of illumination, were in no case, so far as I could judge, affected to a greater extent than they would have been by so much lamp-light artificially introduced."[207] It is computed by Prof. J. Holetschak that, early in October, 1909, Halley's comet should have the brightness of a star of about 14½ magnitude.[208] It should then--if not detected before--be discoverable with some of the large telescopes now available. According to the computations of Messrs. Cowell and Crommelin, the comet should enter Pisces from Aries in January, 1910. "Travelling westward towards the star γ Piscium until the beginning of May, and then turning eastward again, it will travel back through the constellations Cetus, Orion, Monoceros, Hydra, and Sextans." From this it seems that observers in the southern hemisphere will have a better view of the comet than those in northern latitudes. The computed brightness varies from 1 on January 2, 1910, to 1112 on May 10. But the actual brightness of a comet does not always agree with theory. It is sometimes brighter than calculation would indicate. According to Prof. O. C. Wendell, Halley's comet will, on May 12, 1910, approach the earth's orbit within 4·6 millions of miles; and he thinks that possibly the earth may "encounter some meteors," which are presumably connected with the comet. He has computed the "radiant point" of these meteors (that is, the point from which they appear to come), and finds its position to be R.A. 22{h} 42{m}·9, Decl. N. 1° 18'. This point lies a little south-west of the star β Piscium.