APPENDIX. 455 



U. S. Ship Vincennes, ■ 



August 10th, 1840. 



Sir, 



You will proceed to the Sandwich Islands, running for all shoals 

 that may lay in or near your track, and if any are found, they will be 

 carefully examined. A copy of those existing is herewith enclosed. 

 This duty is not to divert you so far from your course, as to subject 

 you to the necessity of a further reduction of your rations. 



You will endeavour to procure provisions from any vessel you may 

 meet with, so as to enable you to issue the complete ration. 



I am, &c, 



Charles Wilkes, 



Commanding Exploring Expedition. 



Captain Hudson, 



U. S. Ship Peacock. 



U. S. Ship Vincennes, 



At Sea, August 11th, 1840. 



Sir, 



I send you the dipping-needles : at any land you make, you will get 

 observations with them. 



You will not omit, on making any land whatever, to put over 

 your patent log, and run a base, and get what results you can in 

 passing it, particularly the latitude and longitude of its points and 

 peaks. 



On your way to the northward, I have concluded you will be 

 enabled to reach Vavao without difficulty. You will therefore have 

 communication with it so far as to ascertain the dispositions of the 

 Shylock's men, without delay. 



I am, &c, 



Charles Wilkes, 



Commanding Exploring Expedition. 



Lieut. Com. C. Ringgold, 



U. S. Brig Porpoise. 



