FIREBALL OF OCTOBER 23.—Mr. W. F. Denning writes:— “The fireball of Sunday, October 23, 8h. 12m., was observed at Kenley (Surrey), Ilford (Essex), and in Wales, as well as at other places. It appears to have passed over the sea N.E. of the mouth of the Thames at heights of 84 to 40 miles. The length of the luminous course was about 75 miles, and the velocity 19 miles per second. Radiant near α Arietis.