Warre and Vavasour, 1845-6. 23 to the best mode of efficiently carrying them out, and also to communicate to you all the practical and local knowledge which in an eminent degree he possesses, of the country to be visited, and to assist you with all the means, which in his official capacity he has at his disposal, you will in all respects be guided by and conform to his advice and instructions in the progress of this survey and special service entrusted to you. 4. You will be careful to preserve perfect secrecy as to the objects of the journey which you are to undertake, and by every safe opportunity you will report your departmental proceedings, and accompany your statements with illustra- tive sketches, addressing the same to me. 5. As all your communications will be transmitted for the information of Her Majesty's Government, through the Gov- ernor General, I need not express to you the necessity of pay- ing the utmost attention to the rendering of as full and at the same time of as accurate a representation as possible of what- ever may come under your observation. 6. It will, of course, be an important part of your duty to examine and report on all existing British posts, to ascertain and report if they be of a nature to resist any sudden attack, or whether they could be made so in a short space of time, likewise to examine and report the nature of the defenses which in your professional judgment might if required seem best adapted for the protection of such posts of the country, as Sir George Simpson may deem most exposed to attack; especially on the sea coast, bearing in mind the necessity of dispatch in their construction, and in all cases where sea bat- teries or redoubts on the coast of the Pacific or of large rivers being proposed, that the plans should show how works could be enclosed, have their exterior faces and lines flanked and ditched if practicable, and be supported by some proper de- scription of Keep either in the interior or gorge, and for the whole to be of more or less strength according to each precise locality and to the verbal or other communications which will
be afforded to you by me.----
