Abstract
THERE is a large, dark spot on the southern side of the S.equatorial belt (and nearly in same latitude as the red spot which on July 24 was preceded by a number of small black dots 5° to 10° apart, according to the observations of Dr. Kibbler, of Stamford Hill, who appears to have been the first, or one of the first, to discern these interesting markings. The largest spot seems to be drifting westwards, relatively to the zero meridian (System II.) of Mr. Crommelin's ephemerides, at the same rate as the S. temperate zone of Jupiter, viz. 16 degrees per month. On August 3 I observed the spot in transit at 8h. 56m., hence its longitude was 232°.8. If the westerly drift of the object is continued and its existence sufficiently prolonged, it will arrive at conjunction with the following end of the red spot in July, 1902, the longitude of the latter being about 46°. This value has shown little variation during the last twelve months.
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