抄録
The results of observations and brief discussion of the large meteor appeared at 4h 23m C. S. T. of Japan on Nov. 18, 1931, above the northern part of Japan. The meteor is found to belong the Leonids, the height of appearance and disappearance and the length of path are respectively 238km., 68km, and 209km. The train left by the meteor was seen with naked-eye for 15 minutes (about 80km. above the earth's surface), and the lower part of it seems to be shifted towards N30°W. The velocity of diffusion of the train vertical to the path was about 3.3 metres per second.
