1907] Fernald,— Soil Preferences of Alpine Plants 181 
TABLE III —continued. 
Group I (Plants which, south of the St. Lawrence, are 
controlled in their Distribution by a Preponderance 
of Potassium in the Soil.) 
Stations, and Rocks of the Region from which Potassic 
Soils could be derived. 
Eriophorum callitrix 
| Arenaria groenlandica 
Carex rariflora 
| Rubus Chamaemorus 
| Empetrum nigrum 
Seal Island, Labrador (gneiss?) . 
Webeck Harbor, Labrador (gneiss, syenite 8 
Hopedale, Labrador (gneiss, granite ?) f 
Paul's Island, Labrador (gneiss !?) j 
Nain, Labrador (gneiss ) . . . 
Hebron, Labrador (gneiss ?) . 
Ungava Bay, Cape Chudleigh, Labrador (gneiss sy 
Cumberland Sound, Baffin Land (gneiss, granite) . 
Nottingham Island, Hudson Strait (gneiss, syenite *)  . 
Cape Prince of Wales and Ashe’s Inlet, or North Bluff, Hud: | 
son Strait (gneiss '*) . 
Richmond Gulf, Ungava (feldspathic argillite, gneiss, ‘ete. DE |+ 
Great Whale River, Ungava (gneiss !5) . ^ BT... 
Lake Mistassini, North East Territory (gneiss 19) ; ee 
Fort Churchill, Hudson Bay (felspathic arkose, etc. 2). I + + 
Chesterfield Inlet, Hudson Bay (granite, gneiss?) . . . . Toc 
+ 
-A 
DES 
eb e+ | 
+ + +++ + + 
T4 
ee 
i 
Great Bear Lake, Mackenzie (granite, gneiss ?) . SIE E 
Fort Resolution, Great Slave Lake, Mackenzie (granite 25) Tu | 
Athabasca Plains, Athabasca (granite and gneiss ?*) 2.3 | 
1 Dana indicates a “central Newfoundland range" of Archaean, and ''two other 
ranges farther east," the only one shown on his map running from Despair Bay north- 
eastward to Fogo Island region. On Logan's map in the Atlas accompanying the Geol- 
ogy of Canada (1863) the southeastern district of Newfoundland is also indicated as 
chiefly Archaean. 
2 “Cette soi-disant forêt sur laquelle on marche....se trouve en quelques endroites 
de la cóte, comme à la Pointe-Ouest, par example. La, la végétation se présente, en 
effet, sous l’ aspect d’ un tapis serré de plantes basses (Arctostaphylos Uva-Ursi, Vacci- 
nium Vitis-Idaea, Vaccinium pennsylvanicum, Ribes oxyacanthoides, Empetrum nigrum, 
etc.), formé en outre de tous petits sapins et d'épicéas tourmentés. . . .Cette. plateforme 
nous montre ici une succession de lits minces de calcaires argileux le plus souvent peu 
fossiliféres. Notre promenade ayant lieu pendant la basse mer, nous rencontrons des 
blocs erratiques, parfois nombreux et groupés dans de petites anses, parfois isolés, cà et 
là, et sur lesquels nous reviendrons à propos de la période quaternaire. Presque tous 
ces blocs sont formé de roches cristallines (granit, gneiss, anorthosite, etc.) "— Schmitt, 
Monographie de |’ Ile d’ Anticosti, 11, 70 (1904). 
3 * With the exception of a narrow border of Silurian strata on the Strait of Belle Isle, 
another at the mouth of the Mingan River, and a third near the Seven Islands, with the 
addition of two narrow Silurian strips running a few miles up the Murray River and the 
Gouffre, the north shore of the St, Lawrence is the southern boundary of this ancient 
series of deposits [Laurentian, chiefly granites and gneisses] from Labrador to Cape 
Tourmente’’— Logan, Geol. Can. 47 (1863). 
4 “ Looking up through the bays and harbors we can see the low conical hills of Lau- 
rentian gneiss"— Packard, Lab. Coast, 281 (1891). 
