CHAPTER VII. 
SAN FRANCISCO TO MANILLA. 
1841. 
By the 28th of October, all the exploring parties had returned, and 
the duties of the observatory and surveys were completed. The in¬ 
struments were at once embarked, and preparations made to sail w T ith 
the first fair wind. 
By a series of observations of moon culminating stars, the longitude 
of Sausalito Fort was found to be 122° 25' 36" W. ; the latitude, by 
numerous altitudes, 37° 50' 50" N. Full series of magnetic observa¬ 
tions were also made, with the usual meteorological record. The 
mean temperature for the eighty days during which the Vincennes lay 
at Sausalito was 61*6°. 
The addition of the brig Oregon to the squadron rendered many 
changes necessary in the distribution of the officers. The command 
of that vessel was given to Lieutenant Carr, first lieutenant of the 
Vincennes, and such officers were ordered to act under him as would 
insure efficiency and harmony in the duties that remained to be com¬ 
pleted. 
It was with no little regret that I parted with Lieutenant Carr, who 
had been the executive officer of my ship for upwards of two years, 
during which time his duties had been at all times responsible, arduous, 
and valuable to the Expedition. By his excellent management the 
vessel had been kept in the best possible order, and while the comforts 
of the men were carefully attended to, the rules and regulations of the 
vessel were strictly enforced. In addition to the sufficiently arduous 
duties of executive officer, he was, during my frequent and necessary 
absences, charged not only with the duties on board, but with those of 
the observatory, and was, besides, my assistant in the care of the 
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