APPENDIX. 
A. 
INSTRUCTIONS OF THE SECRETARY OF THE NAVY TO LIEUT, 
DE HAVEN, COMMANDING THE U. S. GRINNELL EXPEDITION. 
United States Navy Department, ^ 
Washington, Wednesday, May 15, 1850. f 
SiE, — Having been selected to command the expedition in search of Sir John 
Franklin and his companions, you will take charge of the brigantines, the Ad- 
vance and Rescue, that have been fitted out for that service, and as soon as 
you are ready, proceed with them to sea, and make the best of your way to 
Lancaster Sound. 
These vessels have been furnished to the government for this service by the 
munificence of a private citizen, Mr. Henry Grinnell, of New York. You will, 
tlierefore, be careful of them, that they may be returned to their owner in good 
condition. They have been provisioned for three years. 
Passed Midshipman S. P. GritEn has been selected to con^mand one of the 
vessels. You will, therefore, consider him as your second in. command. Con- 
fer with him, and treat him accordingly. 
The chief object of this expedition is to search for, and, if found, afford relief 
to Sir John Franklin, of the Royal Navy, and his companions. 
You will, therefore, use all diligence and make every exertion to this end, 
paying attention as you go to subjects of scientific inquiry only so far as they 
may not interfere with the main object of the expedition. 
Having passed Barrow's Straits, you will turn your attention northward to 
Wellington Channel, and westward to Cape Walker, and be governed by cir- 
cumstances as to the course you will then take. 
Accordingly, you will exercise your own discretion, after seeing the condition 
of the ice, sea, and weather, whether the two vessels shall here separate — one 
for Cape Walker, and the other for Wellington Straits ; or whether they shall 
both proceed together for the one place or the other. 
Should you find it impossible, on account of the ice, to get through to Barrow's 
Straits, you will then turn your attention to Jones's Sound and Smith's Sound. 
Finding these closed or impracticable, and failing of all traces of the missing 
expedition, the season will probably then be too far advanced for any other at- 
tempts. If so, you will return to New York. 
Acquaint Passed Midshipman Grifiin before sailing, and from time to time 
during the voyage, fully with all your plans and intentions, and before sailing 
appoint a place of rendezvous ; change it as often as circumstances may render 
a change desirable, but always have a place of rendezvous fixed upon, so that 
in case the two vessels of the expedition may at any time become separated, 
each may know where to look for the other. 
