Index uppermost. Instrument inverted.
A + 7'. 48" B - 11'. 55"
7 . 48 11 . 45
7 . 55 11 . 45
——— ———-
Mean 7 . 50 Mean 11 . 48 B.
Mean + 7 . 50 A.
———-
4) 19 . 38
———-
4 . 54 Dip.
3 . 53 Tabular.
1 . 1 Difference +
———-
Height of the eye, 15 feet, 6 inches.
Parts of the horizon observed, SW. by S. and NE. by N.
Depth of the sea, 29 feet.
Barometer - 29 . 64 inches.
Thermometer { Air 83-1/2º
{ Sea 81-1/2º
Latitude - 38º 50' north.
Longitude - 118º 00' east.
Moderate breeze from SE. by S.; rather hazy, but the horizon sharp and distinct.
No. 50.
OFF THE PEI-HO, YELLOW SEA.
August 8, 1816.—6.15. A.M.
Index uppermost. Instrument inverted.
A + 10'. 20" B - 12'. 50"
10 . 18 12 . 45
10 . 35 13 . 00
————— —————
Mean 10 . 24, 3 Mean 12 . 51.7 B.
Mean + 10 . 24.3 A.
—————
4) 23 . 16
5 . 49 Dip.
3 . 50 Tabular.
1 . 59 Difference +
—————
Height of the eye, 15 feet, 3 inches.
Parts of the horizon observed, NNE. and SSW. clear of the land.
Depth of the sea, 26 feet.