Part 16 (1/2)

No. 59.

OFF THE PEI-HO, YELLOW SEA.

_August 10, 1816._--2. 15. P.M.

Index uppermost. Instrument inverted A + 15'. 10” B - 7'. 50”

15 . 10 8 . 10 15 . 10 8 . 05 --------- --------- Mean 15 . 13.3 Mean 8 . 01.7 B.

Mean + 15 . 13.3 A.

--------- 4) 21 . 15 5 . 48.7 Dip.

3 . 50 Tabular.

1 . 59 Difference.

Height of the eye, 15 feet, 3 inches.

Parts of the horizon observed, NW. by N. and SE. by S.

Depth of the water, 27 feet.

Barometer 29 . 68 inches.

Thermometer { Air 84 { Sea 83

Lat.i.tude 38. 50' north.

Longitude 118. 00' east.

The vessels in all parts of the horizon have an inverted image under them; this is very considerable, some having about a third of the sail, others only the hull.

No. 110.

OFF THE CAPE.

_July 28, 1817._--2.30. P.M.

Index uppermost. Instrument inverted.

A + 6'. 35” B - 5'. 00”

6 . 35 4 . 55 6 . 40 5 . 00 -------- --------- Mean 6 . 36.7 Mean 4 . 58.3 B.

Mean + 6 . 36.7 A.

--------- 4) 11 . 35 2 . 53.7 Dip.

3 . 49 Tabular.

55 Difference - ---------

Height of the eye, 15 feet.

Parts of the horizon observed, SE. and NW.

Thermometer { Air 64 { Sea 59 Depth of the sea, 222 feet.

Lat.i.tude 34. 57' south.

Longitude 20. 15' east.

Cape Lagullus due north, distant 6 or 8 miles.