48 
DISCO. 
line of uplift of the Lake Superior traps. To the 
southeast, it cuts a ledge of syenitic gneiss, leaving a 
knobbed peninsula, abounding in low islands and har- 
bors, on one of which is the little settlement of Lievely. 
I had not many hours to devote to this rude recon- 
noissance, much of which was aided by bird’s-eye 
views from the adjacent peaks. Commencing at the 
southeastern end of the island, and walking to the 
N.N.W., I met abundant schistose material, inclining 
to the northeast at an angle of 25°. Against this the 
dike cut cleanly, with little adjacent alteration, ris- 
ing up from its long, conoidal slopes of detritus into 
escarped terraces nearly 1400 feet high. These were 
like the Hindoo Ghauts, as I had seen them about 
Kandalah ; they had the same monumental structure, 
the samep/a^mM-formed summit, the same sublime ra- 
vines. How strangely this crust we wander over as- 
serts its identity through all the disguises of climate ! 
Some five miles further to the east, the injection 
had caused more disturbance. My walk upon this 
line was soon varied with chloritic and slaty indica- 
tions ; and, where these met the traps, they were in- 
terfused with sandstones, and abounding with coarse- 
ly vesicular amygdaloids. In this transitional belt I 
picked up some fine zeolites. I noticed, too, nodular 
epidotes in profusion. 
So much for Disco. Paul Zachareus, long-haired, 
swarthy, Christian Paul, said that the wind was fair : 
Lovell, like a good sailor, exercised his authority over 
the doctor : the furs were packed, my sketches and 
wet hortus siccus properly combined, and we started 
again for our little brig. 
We left the Whale-fish Islands on the 29th, in com- 
pany with the Rescue. On the 30th we doubled the 
