Dec. 13, 1908 | 30.51 |29.35 |29.998|
Cape Bryant |Jan. 16-Feb. 4, 1909 | 30.10 |29.83 |29.976|
Cape Morris Jesup|May 14-May 22, 1909 | 30.70 |30.24 |30.469|
Fort Conger |June 11-June 25, 1909 | 30.19 |29.74 |30.013|
Fort Conger[10] |June 11-June 25, 1882 | 30.129 |29.416 |29.817|
Fort Conger[10] |June 11-June 25, 1883 | 30.218 |29.590 |29.949|
=================+=======================+========+=======+======+=========

The above tabulation shows that during the month the average fluctuation
of the barometer at Cape Sheridan amounts to 1.2 inches, being greatest
in February and least in June.

An inspection of the monthly means shows that the barometer at Cape
Sheridan is lowest for the months of December and January, or about
January 1st, and highest about April 1st, the range of the fluctuation
being about 0.5 inch. These results agree well with those obtained by
Greely at Fort Conger and illustrated by a diagram upon p. 166, Vol. II,
of his Report.

From a tabulation made according to hours of the day, but not given
here, there is seen to be a diurnal fluctuation at Cape Sheridan
amounting to a little more than 1/100 of an inch. The minima of this
fluctuation are fairly well defined from November to April and occur at
about 2 o'clock both A.M. and P.M.

After leaving Etah, August 17, 1908, on the voyage northward until July
12, 1909, thermograms covering 5-1/2 months and barograms covering nine
months of this interval were obtained from self-recording instruments.
These are records in addition to the direct hourly readings of the
thermometer and barometer made by the tide observers and from which the
above results have been deduced.

FOOTNOTES:

[4] Transmitted by O. H. TITTMANN, Superintendent, Coast and Geodetic
Survey.

[5] These observations were made by Marvin and MacMillan, assisted by
Borup, seaman Barnes, and fireman Wiseman.--R.E.P.

[6] Results from Greely's observations, 1881-83, covering a period of
nearly two years.

[7] Observations made in 1875-76 and 1881-83. Greely's Report, Vol. II,
p. 230.

[8] Greely's Report, Vol. II, pp. 196, 197, 220, 221. Hourly readings
used.

[9] Observations made in 1881-83. Greely's Report, Vol. II, p. 166.

[10] Greely's Report, Vol. II, pp. 122, 123, 146, 147. Hourly readings
are reduced to sea level.

APPENDIX II

_Facsimiles of Original Observations by Marvin, Bartlett, and Peary and
of Original Certificates by M