90 SCIENCE. [Vor. IIL, No. 51. 
ticable. On the line of the supposed reef, made in 1768-69. No reference to it appears 
which has ornamented the charts for so many 
years as connecting Bogosloff and Umnak, 
three miles from the island, we sounded in 
eight hundred fathoms without touching bot- 
tom. With the exception of a small reef near 
the north-east end of Umnak, and the rocks 
within a short distance of Bogosloff, there is 
water more than eight hundred fathoms deep 
in the abstract of their report which has been 
preserved for us by Coxe; but a little profile 
surrounded by rocks is represented off the end 
of Umnak on their chart, which evidently rep- 
resents the rock which existed before the pres- 
ent peak was raised. A facsimile of this part 
of their map appears in the corner of the Kru- — 
senstern map on this page. 
The next information is given © 
by Cook’s voyage in 1778, when 
an elevated rock, like a tower, 
was seen Oct. 29, at a distance ~ 
Sv i 
we Pate eo aa of twelve miles: ‘ The sea, which 
ES ote acne eoreee ee ei et eu ie) ran very high, broke nowhere but — 
Sai Hoot es fiat a E\Umnak: against it.’ On Cook’s chart it 
Se git) ac ees ce is called Ship Rock, but its iden-_ 
5 & tity with what is now known as — 
200. 
2 
PLAN OF THE ID. 
JOANNA BOGOSLOVA. 
Lat. 53° 55’, Lon. 168° W. Gr. 
PLAN FROM KRUSENSTERN’S ATLAS, 1826. 
on all sides of the island. The supposed reef 
was probably taken for granted by those who 
saw the white water of a tide-rip which eddies 
southward toward Umnak Pass on the ebb, in 
the wake of Bogosloff, as we ourselves observed 
to occur inasmall way. Ship Rock is seen 
on several of the sketches, standing off to the 
northward. ‘The earliest information in regard 
to this island is derived from the map of Kre- 
nitzin and Levasheff, prepared from surveys 
Ship Rock is uncertain; and at — 
that distance: there might have 
been a number of adjacent rocks 
or breakers not visible. 
We learn from Langsdorff, who 
visited this region from 1804 to 
1806, that, previous to the ap- 
pearance of the present peak of 
Bogosloff, a rocky islet had long 
stood in the same situation, which 
the Aleuts declared from the time 
of their forefathers had been a 
notable resort of seals and sea- — 
lions. This could not have been ~ 
the present Ship Rock, which is — 
a huge perpendicular pillar. 
In 1795 the islanders marked a — 
local appearance, as of fog, in 
the neighborhood of this rock, 
which did not disperse even when 
the rest of the atmosphere was 
perfectly clear. This created — 
much uneasiness, since the na- — 
tives of Umnak and Unalashka ~ 
had been used to regard this rock 
as one of their great sources of 
food-supply. After a long time, 
in the spring of 1796, one of the 
more courageous natives visited 
the locality, and returned imme- 
diately in great terror, saying that the sea all 
about the rock boiled, and that the supposed — 
fog was the steam arising from it. It was 
then supposed to have become the abode of 
evil spirits, and was avoided by every one 
without exception. The disturbances were 
accompanied by volcanic activity in the cra- 
ters of Makushin on Unalashka and others on 
Umnak Island. The account given by Bara- 
noff and Veniaminoff of what followed may be 
> ie 
