420 APPENDIX. 
If a boat should require assistance, she will hoist the blue flag, or 
No. 5. 
After returning on board, each officer will furnish his commanding 
officer with a copy of his day's work, with the soundings reduced to 
the standard ; a diagram of his boat's track ; and, if co-operating with 
other boats, their relative positions at each anchorage : it being under- 
stood in the diagrams, that the top of the paper will always represent 
the north. 
Jn case of night coming on, the vessels will, if their boats have not 
joined them fire a gun and then a rocket, — the first to call attention, 
the latter to give the direction ; the rocket will be repeated every 
fifteen minutes, and the gun every half hour ; keeping up their night 
distinguishing signals till their respective boats have returned ; and 
when any boat joins them, other than their own, to remain the night, 
from stress of weather, fog, or any other cause, the vessel will fire 
two guns in quick succession. 
Charles Wilkes, 
Commanding Exploring Expedition. 
U. S. Ship Vincennes, 
February 22d, 1839. 
XXIX. 
INSTRUCTIONS FOR THE VINCENNES. 
U. S. Ship Vincennes, 
Orange Harbour, Feb. 23d, 1839. 
Lieutenant Craven will enforce strictly the regulations of the 
ship. 
The following officers are left on board the ship for duty, viz., 
Lieutenant Carr; Lieutenant Alden; Purser Waldron; Chaplain 
Elliott; Acting-Master North; Passed Midshipmen Totten, Rey- 
nolds, May, and Sandford; Acting Midshipmen Clemson, Thompson, 
Clarke, and Elliott ; and the four forward officers. 
1st. Lieutenant Craven will have the men who have been trans- 
ferred temporarily to this ship, stationed and quartered at the guns, 
dividing the officers in such divisions that they may be regularly 
exercised agreeably to the rules and regulations. 
