THE POSSESSION ISLANDS.— COULMAX ISLAND. 
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feet high, of basalt. This island, the largest of the group, is 2 miles long in a north- 
and-south direction. The landing place is at the northern end, which is low, flat and 
prominently terraced. The next largest island may be a mile across : like the first it 
has vertical sides. Of the other islands, three are flat-topped, about a quarter of a 
mile in diameter, and 50 feet high. They appear to be roughly rectangular in shape, 
and have bare vertical sides. A fourth forms an isolated pillar appearing to be made 
up of vertical columns, while a fifth is less than a quarter of a mile across and over 
100 feet high. This last shows an uneven junction of two rocks at about 50 feet 
above the sea (Fig. 2). The distribution of snow would seem to show that the rocks 
are tuff and basalt, the tuft’ being uppermost. The junction is irregular, but on the 
whole slopes from west to east, away from the high land. 
Fig. 3. — East side of Coulman Island, showing the hoeizontal structoke of the 
ROCKS, AND THE “ PIEDMONT- AGROUND ” WHICH SURROUNDS THE ISLAND. 
Coulman Island. 
This island is situated in latitude 73 1 S., longitude 170° E. It was discovered by 
Sir James Clarke Ross, but the first rock-specimens were brought back by the 
‘ Southern Cross ’ expedition ; they were determined to be hornl flende-basalt and 
basalt-agglomerate,* but no details were given as to the distribution of the rocks. Here 
also the land is characterised by bare rock-cliffs more than 1000 feet high, which fall 
sheer away to the sea. The island has an even outline. Its top is nearly flat at Cape 
Wadworth, the north end, but at the south end rises to nearly 3000 feet. It is about 
20 miles long, and averages 7 miles in breadth. Cape Anne, the south end, terminates 
in a bare cliff over 2000 feet high. It shows chrome-yellow patches in several places, 
Prior, Rep. ‘ Southern Cross’ Collections (British Museum), 1902, p. 322. 
