You will bear in mind that the primary object of this expedition is the examination of a new tract of unknown country for practical purposes, by practical men--that, in fact, the discovery of new land of an available kind for pasture has become a thing to be desired, of paramount importance, and an object in the attainment of which the interests and perhaps the fate of this colony depend. You will thus conduct your expedition with the view of promoting this principal object to the best of your ability. But it is hardly needful to observe to you that this chief object may be promoted and attained without neglecting to observe the geographical, geological, and mineralogical features of the country you pass through; its productions--animal and vegetable; and the character, dialects, and customs, to some extent, of the aboriginal tribes you may fall in with. You have been so frequently employed in exploring expeditions, though of minor importance perhaps to the present, that you must be well aware it is no less impolitic than cruel to come into actual collision, wantonly, unadvisedly, and maliciously, with the natives; and, on the contrary, that it is no less humane than politic to leave no angry recollections of white people, where the footsteps of travellers, however few and far between, must be expected to follow yours. Should your route, either in proceeding on the expedition or returning, be in the direction of that part of the Irwin River where for the discovery of coal the colony is indebted to yourself and brothers, it would be desirable that you should devote a short time to the examination of the locality where it was first found; to excavation, to some moderate extent, in the vicinity of the veins of coal of most promise; and, above all, to the ascertainment of the fact if coal crops out, or if there be in the soil any indications of it between the place where the mine was discovered by you in 1846 and the seashore, in that intervening space of about thirty-eight or forty miles, or to the northward of it in the direction of Shark's Bay, where Dr. von Somner thought the coal-seam of the Irwin might again make its appearance.