The most prominent idea in the imagination of a settler on his first arrival at an Australian colony, is on the subject of the natives. Whilst in England he was, like the rest of his generous-minded countrymen, sensibly alive to the wrongs of these unhappy beings -- wrongs which, originating in a great measure in the eloquence of Exeter Hall, have awakened the sympathies of a humane and unselfish people throughout the length and breadth of the kingdom. Full of these noble and ennobling sentiments, the emigrant approaches the scene of British-colonial cruelty; but no sooner does he land, than a considerable change takes place in his feelings. He begins to think that he is about to place his valuable person and property in the very midst of a nation of savages, who are entirely unrestrained by any moral or human laws, or any religious scruples, from taking the most disagreeable liberties with these precious things. The refined and amiable philanthropist gradually sinks into the coarse-minded and selfish settler, who is determined to protect himself, his family, and effects, by every means in his power -- even at the risk of outraging the amiable feelings of his brother philanthropists at home. In Western Australia, the natives generally are in very good order; they behave peaceably towards the settlers, eat their flour, and in return occasionally herd or hunt up their cattle, and keep their larders supplied with kangaroo. It is very rarely -- I have never indeed heard of a single well-authenticated instance -- that any amount of benefits, or the most unvarying kindness, can awaken the smallest spark of gratitude in the breasts of these degraded savages. Those who derive their chief support from the flour and broken meat daily bestowed upon them by the farm settlers, would send a spear through their benefactors with as little remorse as through the breast of a stranger. The fear of punishment alone has any influence over them; and although in this colony they are never treated with anything like cruelty or oppression, it is absolutely necessary to personal safety to maintain a firm and prompt authority over them. When we first arrived, we were philanthropists, in the usual sense of that term, and thought a good deal about the moral and general destitution of this unfortunate people; but when we first encountered on the road a party of coffee-coloured savages, with spears in their hands, and loose kangaroo-skin cloaks (their only garments) on their shoulders, accompanied by their women similarly clad, and each carrying in a bag at her back her black-haired offspring, with a face as filthy as its mother's -- we by no means felt inclined to step forward and embrace them as brethren.