3g8 APPENDIX. 
Lieutenant Carr will be engaged with me in scientific duty at the 
observatory. . 
Lieutenant Johnson will perform the duty of first-lieutenant during 
the absence of Lieutenant Craven, and will be excused from night 
watch when so engaged. The officers will be divided into watches 
for duty on board ship, at the observatory, and elsewhere, as fol- 
lows : 
1st watch, Lieutenant Johnson and Passed Midshipman Totten. 
2d watch, Lieutenant Alden and Passed Midshipman Reynolds. 
3d watch, Lieutenant Maury and Passed Midshipman May. 
4th watch, Acting-Master North and Passed Midshipman Sandford. 
A relief watch will at all times be on board ship for such duty as 
may be required. 
Mr. Elliot, chaplain, supernumerary for such duty as may be 
required. 
Midshipmen Clark and Elliott, will be excused from watch for 
boats and other duty. 
Acting-Surgeon Gilchrist will be associated with Mr. Rich, Bota- 
nist, of the Expedition. 
Assistant-Surgeon Fox, as assistant to William Peale, Naturalist, 
and Mr. Dana, Mineralogist. 
Assistant-Surgeon Whittle as assistant to Dr. Pickering. 
The officers attached to the tenders, Sea-Gull and Flying-Fish, 
will be associated in scientific duties with the first and fourth w 7 atches 
of the Vincennes and Peacock. 
The arrangements heretofore made in regard to the duties of the 
medical officers will be complied with until further orders, which 
will enable them to devote much of their time to the scientific duties ; 
and it is desirable that they should receive from the scientific gen- 
tlemen, with whom they are associated, every facility which can be 
afforded them, and every opportunity of being useful. 
As the object of this association of duty is to extend as far as 
possible the operations of the Expedition, it is earnestly requested 
that the gentlemen composing the scientific corps will on all occa- 
sions avail themselves of the services of those officers who by this 
order have been associated with them, and of all others who may 
(when their duties and time will permit) be desirous of aiding 
or advancing the interests of the Expedition, by making collections, 
drawings, &c, and that the utmost harmony, good feeling, and 
concert of action may exist at all times, as nothing will so much 
