72 RECENT CHANGES IN THE SURFACE OF JUPITER, 
When the air is favourable the large telescope reveals a 
series of narrow bands upon which darker markings are sometimes 
seen ; those in the north cap are fleeting, and the same may be 
said of a white spot seen there some time since. On the south cap 
there is a dark marking on the edge which has existed for some 
time ; this is about the same longitude as the red spot, and from 
im outline, as if very much disturbed—in fact it 
features to those which mark a great disturbance in the next 
the 
? 
it has for a long time, if not always, been marked by a dark a4 
half the size of and preceding the red spot. The nearest eg 
to the equator on the north side is a particularly interest 
because of the great changes which take place in it. In e “0 
formed one of the f (then) ly equal equatorial belts, aie 
and colour it was inferior to none ; in 1878 it had become papers 
as it is now, and has so remained until within the past few vas 
it has often been quite invisible when the equatorial — saw 
very bright. On the 28th October, at 11 p.m., this yeal than 
that - 
a part of it was enlarged, and much darker in wee . 
usual, and upon ipisaielsilgg hcenihiy I saw two black pes ae 
part, and noticed that just preceding this the belt W® 
right in two by a band of white light similar to the three Wack 
surface. The following night I saw that there were ™ om 
x and that all this belt following them for . distant 
thing like half the circumference of Jupiter was V' and this 
in colour and fully three times as wide as it had been, oe 
for the diameter of the belt had been increased from S! 
hundred miles to 2,000 miles, for a length of 120,000 
short space of a few days. 
