302 Bappicker— Notes on the Aspect of the Planet Mars. 
and the Margaritifer Sinus. The proper shape of the two Sinus was not recog- 
nised ; neither was it in drawing fig. 2, which also shows Deucalionis Regio as a 
white division of the southern spot. In fig. 3 the division lies in an opposite 
direction, being probably Thymiamata, while only in fig. 4 the more exact 
angular shape was made out. It is obvious that, when these markings are visible 
near the central meridian, the sp.—nf. direction of the Deucalionis Regio must 
prevail ; but when they are nearer to the preceding edge, the sf.—mnp. direction of 
Thymiamata must be more conspicuous. All the drawings, figs: 1-4, show an 
intensely dark marking in the north, Lacus Niliacus, in shape agreeing strikingly 
with my drawings of 1881-82 (see these Transactions, Vol. I., Ser. II., Part xx., 
figs. 1, 2, 17, 18, Plates 36 and 37). The interruption of this spot, visible on 
fig. 1, and slightly indicated on figs. 2 and 4, is perhaps visible on the two last 
quoted drawings of 1881 (figs. 17 and 18); it is probably identical with the inter- 
ruption of Lacus Niliacus on Signor Schiaparelli’s chart of 1882, where it seems 
to be brought about by the gemination of lines discovered by him. 
On all the drawings, figs. 1-4, there is a dusky streak connecting Lacus 
Niliacus with the southern spots—the Indus of Schiaparelli’s chart. It is not 
quite correctly delineated on fig. 2, while in the three other sketches (particularly 
on figs. 3 and 4) it terminates correctly in the following of the two southern 
spots, or Margaritifer Smus. A trace of Gehon—the canal which connects Lacus 
Niliacus with Sinus Sabaeus—I find unmistakably on figs. 3 and 4, perhaps also on 
fig. 2. The dusky shading which proceeds from Lacus Niliacus along the follow- 
ing limb of the planet is probably a trace of the Ganges-system of canals. 
Plate VI., Fig. 5.—1884, March 17. L=78°-0. Power, 216. 
Very clear, but exceedingly difficult. The dark spots decidedly blue, except 
the one on the middle of the dise, which is reddish-brown. I could not 
make out what follows the dark southern spot. 
The conspicuous dark southern spot is Aurorae Sinus; the following spot, which 
could not be discerned, must have been a trace of Lacus Solis... The dark northern 
spot near the preceding limb is again Lacus Niliacus; the dusky streak running 
from it towards the south along the preceding limb, the Indus. The whole sketch 
agrees remarkably well with my drawing of 1882, January 17 (/.c. fig. 4; Plate 36), 
a comparison with which makes it probable that the peculiar (forked) shape of 
Lacus Niliacus indicates a trace of the Hydaspes. The dark patch on the disc- 
middle, connected, as it appears, with Aurorae Sinus, is again the Ganges-system 
of canals; it occurs in very nearly the same shape on my drawings of 1882, 
January 17; 1881, December 14; and 1881, December 9 (J. c. figs. 3, 4, 5, 6 
Plate 36), when I was equally unable to separate its detail. 
) 
