GIUU — ON CANADIAN CAVEKNS. 
173 
east to west, tlie columns to the westward are of larger dimensions 
than those to the eastward.* 
The north-west side of HeiJey Island is boimded by Antelope 
Harboiu", which is between it and the main land ; whilst south of it 
lies the singularly-shaped Stage Island, which is low, and forms the 
western boundary of Henley Harbour. Within the entrance of Cha- 
teau Bay is Whale Island, which again lies in the entrance of Temple 
Bay. The basaltic columns of Henley and Castle Islands can be 
seen from the east point of Wreck Bay, two miles and a-half to the 
south-westward, and I think at one time they must have been united 
with a continuation of the basalt from one island to the other. (See 
map, plate vii.). 
The only other part of British America where basaltic rocks are 
met with on a grand scale is on the shores of the Bay of Fundy. 
The northern side of the large island of Grand Manan, three to four 
hundi'ed feet high, twelve miles south of Campo Bello, New Bruns- 
wick, at the entrance of the bay, is perfectly basaltic in many places, 
and resembles large pieces of squared timber placed upright side by 
side, with a perfection and beauty equal to the basaltic columns of 
Staifa. Whole facades of columns have been broken off and carried 
away by the sea.f Near the Old Bishop the basaltic columns stand 
erect, and appai-ently support the precipice, having five and six faces. 
A small uninhabited island at the entrance of the river Magaguadavic, 
is covered with basaltic pillars of from five to nine sides, many of 
them retreating into the sea. The celebrated clifis of Cape Blomidon, 
in Nova Scotia, four hundred feet high, are composed of new red 
sandstone sui'mounted by crystalline basaltic trap, having a rude 
columnar structure, and presenting a perpendicular wall along the 
top of the precipice. For a general description of these cliffs the 
reader is referred to Dawson's Acadian Geology. 
17. — Empty Basaltic Dykes of Mecattina. (See Map, pi. vui.). 
Among the most singular peculiarities of the southern coast of 
Labrador, is the occurrence of empty basaltic dykes traversing Great 
Mecattina Island in a north-east and south-west direction from one 
side to the other, as described by Admiral Bayfield. J This island, 
composed of the Laurentian rocks, is about tlu'ee and a-half miles 
long, north and south, about three miles wide, and is five hundred 
feet high at its centre ; it is through these granitic (?) hills that 
the empty dykes run. These remarkable dykes, with the position 
of the islands, in relation to the high land inside of Cape Mecat- 
* Trans. Lit. and His. Soc. of Quebec, vol. i. In Lieutenant Baddeley's paper, 
Castle Keep Kock is the name given to Castle Island, and Henley Island is erro- 
neously called Saddle Island. There is a Saddle Island in Red Bay, some miles 
to the westward of York Point. 
t Geol. Survey of Now Brunswick. By Abraham Gesner, St. John, 1839. 
X Sailing directions of the Gulf and River St. Lawrence. 
