58 ¢ Canadian Arctic Expedition, 1918-18 
most of the peninsula and particularly its higher parts. It rests either directly 
upon the sandstone or, where the dolomite yet remains, upon the latter, or 
intersects it as dikes, with the characteristic “burned” transformation of the 
rock in the zone of contact. Parts of the peninsula are, however, made up of 
marine deposits of more recent origin, in the form of gravel stretches with lagoons 
and swamps intersecting the cliffs and connecting them with the low, sandy 
tundra north, east, and west. The vegetation on the peninsula was found to be 
as well developed as over similar areas in the sound east of it, particularly on 
gravelly stretches, and in pockets in the shelter of basalt outcrops. Only at 
one place is there a free exposure of limestone resting on sandstone in the form 
of a small cliff subjected to much erosion. The following are characteristic 
plants composing the vegetation upon the side of this limestone cliff, viz.: ‘Lhe 
moss Barbula Johansenit, furthermore, Cystopteris fragilis, Draba sp., Sazxifraga 
tricuspidata, S. oppositifolia, Dryas integrifolia. 
Apart from these plants, some lichens, growing on basalt or limestone 
debris, were collected on a small island near Murray point. The islands near 
by are composed entirely of Jimestone, while farther out in Coronation gulf this 
is overlaid or replaced by basalt. The basalt also composes the islands forming 
the bridge between Richardson island and the Duke of York archipelago. That 
the coast of Victoria island east of Murray point is low and-composed of sand, 
gravel, sandstone, and limestone, has already been mentioned.! 
REMARKS ON BEDROCK VEGETATION 
From the description given of the vegetation occurring upon the bed rock 
outcrops or debris on the coast and islands from Young point in the west to 
Murray point and cape Barrow in the east it will be seen that, while there seem 
to be no plants limited to the diabase or characteristic of it, except perhaps 
certain lichens and Dryopteris:fragrans, the dolomite has about half a dozen 
characteristic plants besides algae, mosses, and lichens, and Cystopteris fragilis 
and Sazifraga cernua seem to be limited to it. On the bare diabase outcrops 
the vegetation is only found in crevices, with Silene acaulis and Dryopteris 
Jragrans as the most characteristic or only plants occurring. A list of plants 
characteristic of dolomite and diabase outcrops is:— 
Dolomite Diabase 
Algae Lichens 
Lichens Dryopteris fragrans 
Mosses Silene acaulis 
Draba sp. Saxifraga oppositifolia 
Cystopteris fragilis 
Saxifraga cernua 
Saxifraga tricuspidata 
Sazifraga oppositifolia 
Dryas integrifolia 
® This comparative list, however, refers to solid rock only and not to pockets 
and similar places with a more decomposed soil; in the latter situations the 
vegetation is more varied, on diabase as well as on dolomite. 
Apart from lichens and algae, I could find no plants typical to the sandstone 
outcrops on Victoria island. : 
1¥For the coast along the north side of Dease strait see T, Simpson: “Narrative of Discoveri 
America, 1836-39.” London, 1843, pp. 382-86. ‘ Pept os Mewth oepet ah 
