APPENDIX. 415 
your boarding-nettings being up. All trade must be carried on over 
the stern of your boats, and your arms and howitzers be always kept 
ready to repel an attack. 
You will avoid any disputes with them, and never be off your guard 
or free from suspicion: they are in no case to be trusted. Your two 
boats must never be separated at night, but anchored as near together 
as possible. 
You will proceed to the northward, and examine the reefs, passages, 
and islands, towards the Buia land, on the west side of *Mokani and 
*Vakai, connecting the positions of the different reefs and points with 
those of Ovolau. At Passage Island you will obtain a round of angles 
on the objects we have observed, or from Ovolau. I shall anchor there 
with the tender on Tuesday or Wednesday, where you will await me 
until Thursday morning. From Passage Island you will proceed to 
*Labatoo, and from thence to Mbua Bay, making all possible exami- 
nations and surveys. 
Chronometers are furnished to the boats, and their rates and errors 
given. You will make careful comparisons daily, noting them in your 
books. 
A patent log is furnished you to measure your distances run, and 
an azimuth compass. You will observe the variation, and not omit 
your latitude daily by meridian observations or double altitudes; and 
also sights for your chronometers morning and evening. 
You will make a rough diagram or chart as you proceed, distinct 
from your note-book, noting thereon the latitude and longitude of the 
principal points. 
Each boat will keep a log of her proceedings, in which the results 
of observations for latitude and longitude will be inserted, showing the 
positions of your boats at noon, their anchorage at night, and the spot 
from which they get under way in the morning. 
You will communicate these instructions to Mr. De Haven. 
I am, &c., 
Cuartes WILKES, 
Commanding Exploring Expedition. 
P. S. The boats will always be kept within signal distance, and 
separated only in cases of necessity for a short time. 
Respectfully, &c., 
C. W. 
Lizutenant O. H. Perry. 
* The names with an asterisk are now Mokungai, Wakaia, and Kombelau on the chart, 
the order being given before the correct orthography was known. 
