INVESTIGATIONS OF THE ALBATROSS. 253 
prevailed and a clear day was a rare exception. The tidal currents were 
strongest in the vicinity of Unimak Pass and the head of the bay; 
they were greatly affected, however, by the winds. The flood stream 
set to the northward and slightly inshore along the coasts of Unimak 
and the peninsula; the ebb, to the southward and slightly offshore. 
The former was invariably the stronger and probably found an outlet 
by sweeping past Cape Constantine in the direction of Cape Newenham. 
There has been no systematic study of Bering Sea currents and the 
almost constant fogs prevent the navigator from adding much to our 
meager knowledge concerning them. 
Well-equipped fishing vessels can anchor anywhere on Baird or Slime 
Banks and lay out such winds as they would be likely to encounter 
during the summer months. The peninsula will afford a weather shore 
for southeast winds and Amak Island offers fairly good protection on 
its southeast and southwest sides. Port Méller and Herendeen Bay 
will be ports of call for fishermen when they become better known. 
Port Haiden may also prove available after it has been surveyed. 
UNALASKA TO SAN FRANCISCO, AUGUST AND SEPTEMBER, 1890. 
We coaled ship on the 25th, and at 1:15 p. m. the following day left 
in company with the revenue cutter Rush, the latter bound to the Seal 
Islands. The atmosphere was unusually clear, and, as we had never 
used Akutan Pass, we availed ourselves of the favorable opportunity 
of passing through and examining it. There is a clear channel 2 
miles or more in width between Cape Morgan and four small islets 
lying off Unalga Island, free from dangers except near the shores, with 
26 fathoms, rocky bottom, in the narrowést part of the pass. We 
steamed to the eastward during the night, and at 6:17 the following 
morning cast the trawl in 280 fathoms in latitude 53° 56’ N. and longi- 
tude 163° 25’ W., about 9 miles from the reported position of Lenard 
Rock, but saw no indications of shoal water, although the weather was 
clear and a lookout was kept at the masthead. : 
A line of soundings and dredgings was run outside of the 100-fathom 
curve, past the Sannaks and Shumagins, to the vicinity of the Trinity 
Islands, where, in 67 fathoms, latitude 56° 02’ N. and longitude 153° 
52’ W., we took our departure. Running E. 3° 8S. true 11 miles, we 
found 207 fathoms; then KE. true, with intervals of 20 miles, the follow- 
ing depths were found across the line of the great submarine trough 
which extends along the Aleutian Islands, viz: 1,152, 2,197, 2,620, 2,935, 
and 2,925 fathoms. Increasing the interval to 30 miles, we found 2,776 
fathoms, and a further distance of 62 miles gave us 2,414. The maxi- 
mum depth was found in latitude 56° 02’ N. and longitude 151° 12/ W. 
It will be observed that, while the depths are less than those found 
farther west, they are at least 800 fathoms greater than the normal, 
Showing that the easterly extension of the depression reaches that 
point. The line of soundings was extended to the Queen Charlotte 
Islands, where a successful haul of the trawl was made in 1,588 fathoms. 
