58 
PETROLEUM OF PACIFIC COAST OF ALASKA. 
flULL. L'oO. 
The results of the tests may be compared with those of other petro- 
leums in the following table : 
Tests of petroleum from Alaska and other fields. 
Benzine (80~-15(TC.) 
Burning oil (150 - 
300° C.) 
Residuum 
Sulphur-- 
Alaska,- Alaska.* ^gyl 
21 
51 
28 
Trace. 
38.5 
*31 
>'-30. 5 
Gravity 39.1 B. 45.9° B. 
16.5 
54 
29 
Ohio/? 
10 
50 
40 
Cnln Beau- 
}fj* Mexico./ mont, 
iaaa Tex.3 
16 
40 
44 
in 
60 
30 
43° B. 
2. 5 
40 
57. a 
1.7 
22 C B. 
" Penniman & Browne for this report. 
b Oliphant, F. II.. The production of petroleum in 1902 : Mineral Resources U. S. for 
l!)OL'. U. S. Geol. Survey. 1903, p. 533. 
Peckham, S. F., Report on Petroleum, p. 365. 
'■ Woodman. Durand, Jour. Am. Chem. Soc, vol. 13, p. 168. 
' Oliphant, F. II., Petroleum: Mineral Resources U. S. for 1901, U. S. Geol. Survey, 
1902, p. 560. 
f Stillman, T. B., Engineering Chemistry, p. 364. 
'Hayes and Kennedy, Oil fields of Texas-Louisiana coastal plain: Bull. U. S. Geol. 
Survey No. 212, 1903, pp. 146-151. 
'• See above (p. 57 I. 
The petroleum is clearly a refining oil of the same general nature 
as the Pennsylvania petroleum. It resembles the latter in having a 
high proportion of the more volatile compounds and a paraffin base 
and in containing almost no sulphur. The proportions of the several 
constituents given in the table above do not necessarily represent the 
full amounts that could be obtained in practice by different treatment. 
Oil Bay and Gold Bay seepages. — Samples of the seepage petro- 
leum from Oil Bay and Cold Bay have been collected by the writer. 
They were obtained by skimming the petroleum from the surface of 
the pools of water where it was continually rising from the bottom 
of the pool. An effort was made to obtain as much of the fresher oil 
as possible. Vegetable and earthy impurities were removed by strain] 
ing through coarse cloth. Water could not be entirely removed. Oil 
for lubricating purposes at the neighboring wells is obtained from 
these pools in this manner. 
The fresher oil is dark green. That which has remained on the 
surface of the pool for some time is dark brown. 
The oil has doubtless lost a large part of its volatile constituents. 
The analyses therefore do not represent the composition which could 
be expected of the live oil from wells in this region. Such oil would 
have a lower specific gravity, higher percentage of the more volatile 
constituents, and lower percentage of the less volatile constituents, 
residue and sulphur. It would certainly be better than these samples 
