78 THE COLOURS OF JUPITER’S BELTS. 
of two revolutions it has appeared so faint as barely to be visible 
in mid-transit, but I have seen it again on succeeding nights as 
conspicuous as before. 
South of the north pole shading, and between it and the 
northern equatorial belt, runs a narrow purple streak; it com- 
occasions vines without tdodiee the separa 
The northern equatorial belt appears fesse as it iat 
year, of a bright brick-red colour. I say generally, for on one or 
— — I have noted the entire disappearance of the re 
h has been replaced sh a dull-brown colour. Two of the 
series of the most astounding Piseeeat oce arial “on a on™. 
position due to the sian of the planet: The portio 
equatorial belt immediately north of the great red spot is oo 
i noticeable for its rapid 2 ati ; I have noted ae 
esembling cyclonic action her 
mixed occasionall with a tinge of crimson lake or s0 et 
colour. These lattes tints aa not eres and co 
seen on a fine night. The rose or crimso enerally runs 
the southern border of the belt. 4 | 
South of the equatorial band is the great red 4 
of a fairly symmetrical shape, both ends being Sightly a af : 
looks larger to me than it did last year, and the colour 18 ie 
undoubtedly brighter ; it appears to be now rather that of th 
red, anyhow its colour is certainly much beac ase bie wing : 
northern equatorial belt. Two _ — 
have been seen on favourable occas bal 
Between the great spot and the et equa mnie 
band has lately come into view ; I am certain 1 ) 
prior to opposition; it is remarkable hoe its reddish bro in of the at 
and appears to me to be an indication of the filling | 
between the spot and the equatorial ban + has for /gowe 
The south pole shading still appears to me, aS? + changes av? 
years past, of a warm grey colour, and no im 
