404 APPENDIX. 



light and work until dark. The sun's amplitude at rising and setting 

 are the best bearings to begin and end with. 



The error and rate of your chronometer (standard) are herewith 

 enclosed. I need not tell you, that observations with the artificial 

 horizon, when practicable, are to be preferred. 



You will endeavour to obtain the native names of all the islands 

 you survey. 



You will continue in company until signal is made to you to 

 execute the above orders. 



I am, &c, 



Charles Wilkes, 



Commanding Exploring Expedition, 



Lieut. Com. C. Ringgold, 



U. S. Brig Porpoise. 



III. 



U. S. Ship Vincennes, 



Ovolau, May 10th, 1840. 



Sir, 



The launch and first cutter, with Mr. Knox, Mr. Henry, and 

 Dr. Whittle, twelve men, and a pilot, are placed under your orders 

 for a surveying excursion along the north side of the island of 

 Vitilevu. You will observe the following instructions very particu- 

 larly, and in no case depart from them, unless it is for the preservation 

 of your party. 



1st. You will avoid landing any where on the main land or islands, 

 unless the latter should be uninhabited. 



2d. Every precaution must be observed in treating with natives, 

 and no natives must be suffered to come alongside or near your boats 

 without your boarding-nettings being up. All trade must be carried 

 on over the stern of your boat, and your arms and howitzers ready to 

 repel any attack. 



3d. 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. 



4th. Your two boats must never be separated at night, but anchored 

 as near together as possible. You will adhere to the following route 

 of proceeding, viz. : 



Leaving the ship, you will proceed round the north end of Ovolau 



