APPENDIX. 429 



7. An island upon the charts to the southward of Vanua-vatu, that 

 I do not believe exists. 



8. Goro, Direction Island, and the Horseshoe Reef. 



Ten days are allowed you to complete this work. You will ascer- 

 tain their bearings and distances asunder, latitude and longitude, and 

 examine them for harbours; none is supposed to exist but at Maolo. 



You will not suffer any of your boats to be taken by surprise, or to 

 land, unless you deem it necessary for the purpose of carrying on 

 your surveying operations more effectually. I need not point out to 

 you the observations required to be made. You will bring up your 

 work every evening, and construct a chart as you proceed, on a large 

 scale, a quarter of an inch to a mile. 



I enclose a chart herewith, on which the islands to be surveyed are 

 marked. 



Should you not be able to finish all the surveys in the given time, 

 you will omit Goro, Direction Island, and the Horseshoe Reef. 



Sketches of the islands are required, particularly those as they 

 appear on approaching them from the sea; and as much of their 

 topography as can be obtained in surveying them. 



Two more chronometers are furnished you, with their rate and 

 errors. Do not omit daily comparisons as usual. 



Try your patent log well before using it : a strong line of twenty- 

 five or thirty fathoms will be enough. 



Wishing you a successful cruise, 



I am, &c, 



Charles Wilkes, 



Commanding Exploring Expedition. 



Lieutenant Overton Carr, 



U. S. Ship Vincennes. 



U. S. Ship Vincennes, 



Ovolau, May 14th, 1840. 



Sir, 



You will, before beginning to execute the enclosed orders, proceed 

 direct to the island of Lakemba, with Tubou Totai on board, there 

 to meet the Porpoise, when you will transfer him to Lieutenant- 

 Commandant Ringgold, and deliver the enclosed orders to him. 

 Should he not have touched yet at Lakemba, you will then land 

 Tubou Totai, and deliver to him the letter to Lieutenant-Comman- 

 dant Ringgold, and then proceed without delay to the execution of 



vol. in. 108 



