298 On the Physical Appearance of the Planet Mars during the Opposition in 1881. 
November 25. 
No. 12.—L.= 25793. T.= 14> 10™. 
Very clear, definition excellent. 
Central continent reddish orange, with deeper coloured patches; the dark mark- 
ines strikingly blue; the preceding edge of the “hour-glass” very bright, yet 
coloured ; north pole rather bright. 
November 30. 
No. 9.—L.= 176"4. T.= 11" 43", 
Clear ; definition improving, partly very good. 
Colours reddish, yellow, and blue; the north pole surrounded by a dark bluish- 
grey ring; the markings on the central part of the disc difficult to discern, of a 
deeper greyish ruddy colour. 
NO, LO. = 209°, I= 18" 59", 
Very clear, definition excellent. 
Colours as before; divisions in the central continent reddish grey, in drawing a 
little too dark, not too distinct ; the long interruption in the large southern ocean 
considerably bright. 
December 9. 
NO GIS 940i, Wo iP Bsr, 
Definition moderate. Interrupted by clouds. It was exceedingly difficult to 
make out the details. 
The disc orange, rather pale; the markings deeper orange, with the exception of 
the southern oval spot with surrounding parts, and the dark spot (np. to sf.) near 
the preceding limb, which were bluish and bluish-grey ; the oval spot strikingly 
distinct, very dark bluish; the divisions n. and nf. more suspected than seen. 
No. 7.—L.= 11673. T.= 13? 4". 
Definition sometimes very good, yet drawing very difficult. 
The southern spots blue, the northern ones bluish-grey ; the patches on the 
middle of the dise deep orange, difficult to discern; the divisions in the dark spot 
s. sf., next to the sf. part of it, very bright. 
December 14. 
No. 3.—L.= 441, T.= 11" 9". 
Very clear, yet exceedingly difficult to make out details. 
The dark n. and s. markings decidedly blue, the np. spot very dark ; the central 
spots (following) deep orange; the sp. markings more suspected than seen. 
No. 5.—L.= 83°5.  T.= 13" 51". 
Definition pretty good, drawing very difficult. 
The dark sp. spot and the “eye” blue; the spot north of the “eye” and the 
np. one orange-grey ; markings on the disc-middle deep orange ; north pole spots 
only caught in glimpses; south limb of the “eye” very bright. 
