214 The American Geologist. October, 1893 
fested here in Washington and on the Pacific coast in the re- 
sults of this survey than is ordinarily bestowed upon the de- 
termination of the position and bight of a mountain sum- 
mit. This Arctic colossus not only enjoyed the reputation of 
being the culuminating peak of the North American conti- 
nent, serving as a conspicuous monument of the western 
limit of the British possessions, but there was also consider- 
able interest manifested to learn how the three preceding de- 
terminations which were so strangely discrepant would agree 
with this last one. This disagreement chiefly concerned the 
hight of the mountain which had been determined by Dr. 
Dall in 1874, as 19,500±400 feet; by .Mr. Kerr in 1890 as 
15,350 feet; and by Prof. Russell in 1S92 as 18,099 feet. 
The first official announcement of the result of the latest 
measurements was made by Dr. T. C. Mendenhall, superin- 
tendent of the U. S. Coast and Geodetic Survey, at a meet- 
ing of the National Geographic Society in Washington on 
April 28, 1893 (see Nat, Geogr. Mag. vol v, pp 63-67). From 
this communication and collateral information kindly fur- 
nished by Dr. Mendenhall, the following resume has been com- 
piled for publication in Petermann's Mittheilungen. 
Latitude of Port Mulgrave. 
The astronomical observations for determination of lat- 
itude, longitude and azimuth were made on the south end 
of Khantank island near Port Mulgrave, about 420 meters to 
the northwest from the spot where Dr. Dall in 1874 made 
similar observations. The latitude was determined by the 
measurement of circummeridian altitudes of the sun's limb, 
and also by star observations by Talcott's method. The 
latter have not yet been reduced; the former give the follow- 
ing result: Latitude of Port Mulgrave, 59° 33' 50". Dr. Dall's 
determination of latitude making allowance for difference in 
position, becomes 59° 33 51.6. 
Longitude of Port Mulgrave. 
The longitude was obtained by comparison with that of 
Sitka by chronometer transportation, the surveying steamer. 
Hassler, making six round trips between these two places for 
this purpose. The result was 139° 46' 48" W. L. for Port 
Mulgrave. Dr. Dall obtained for his station 139° 4(5 15.9" 
