A + 8'. 10" B - 7'. 10" 8 . 05 7 . 10 8 . 00 7 . 10 ------ ------ Mean 8 . 05 Mean 7 . 10 B. Mean + 8 . 05 A. ------- 15 . 15 ------- 3 . 49 Dip. 3 . 50 Tabular. 1 Difference. ------- Height of the eye, 15 feet, 3 inches. Parts of the horizon observed, WSW. and ENE. Barometer 29 . 78 inches Thermometer {Air 82º {Sea 77º Latitude 35º north. Longitude 124º east. Wind light from south; horizon uncommonly well defined and sharp; sky clear, and sea perfectly smooth. No. 40. OFF THE PEI-HO, YELLOW SEA. _July 29, 1816._--9 A.M. Index uppermost. Instrument inverted. A + 8'. 20" B - 11'. 40" 8 . 45 11 . 35 8 . 30 11 . 50 ------ ------- Mean 8 . 32 Mean 11 . 42 B. Mean + 8 . 32 A. ------- 4) 20 . 14 5 . 3 Dip. 3 . 50 Tabular. 1 . 13 Difference + ------- Height of the eye, 15 feet, 3 inches. Parts of the horizon observed, NW. and SE. The low land just visible in the NW. distant 12 or 14 miles. Depth of the sea, 18 feet. Barometer 29 . 60 inches. Thermometer {Air 81º {Sea 84º Latitude 38º. 50' north. Longitude 118º. 00' east. There has been little wind this morning, after a very close night. No. 43. OFF THE PEI-HO, YELLOW SEA. _August 6, 1816._--1 P.M. 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.