556 APPENDIX. 



Island. I shall direct Lieutenant Case to place a similar mark, if 

 he should reach it before you, in order that neither party may be 

 delayed. 



Lieutenant Case will be ordered to continue with you in the work 

 if you should meet there ; but if he should reach it before you, he will 

 be ordered to proceed at once to Hood's Canal ; and you will then 

 continue the survey down the inlet to the northward. On reaching 

 Whidby's Island, you will pass into and survey Possession Sound to 

 its extreme end, and all its inlets, &c. 



If you cannot pass out of the Deception Passage, you vnll order a 

 party to pass out in boats, and to carry the survey to the southward, 

 along its western shore, whilst you sail back to its southern end, 

 when you will take up the survey and continue it until you meet 

 your boat party, connecting it with Wilson and Hudson Points, 

 which form Port Townsend. You will not, however, go in here, 

 except for temporary anchorage, but proceed at once to the north- 

 ward, along Bellingham Bay and through the group of islands, pass 

 into Birch Bay and Fraser's River, still continuing the survey as far 

 as the entrance to Johnston's Straits. You will then return to the 

 southward, along the eastern shore of Quadia's and Vancouver's 

 Islands, until you arrive again at the Straits of Juan de Fuca, which 

 will be looked for about the first week in July, when you will anchor 

 in New Dungeness Harbour. After reaching it, you will despatch 

 my two boats, with sufficient provisions, to make for this anchorage, 

 ordering them to keep a look-out on the different points for informa- 

 tion from me, which I shall leave, in case I shall have passed down 

 Admiralty Inlet. 



The following instructions will be observed for carrying into effect 

 the surveying duty, &c. 



Whenever practicable, the bases will be measured by chain, and 

 the true direction of the base-line formed. 



Astronomical observations will be particularly attended to, for 

 latitude and longitude, by circummeridian and equal altitudes, daily, 

 if possible, and from those points or the hills or bluffs near by, 

 observations will be made with the theodolite on all distant points 

 or mountain ranges, with a view to ascertain the actual position of 

 peaks, their extent and height, and to form a connexion with your 

 work. For this purpose, I recommend large trees to be barked or 

 whitewashed, which will be found the most convenient signal, and 

 easily distinguished on each side of the straits. An old piece of 



