We would propose that the mail steamers, instead of branching off from Sincapore, as proposed by Lieut. Waghorn, should depart from Point de Galle, Ceylon, make direct for Swan River, there take in coal, and pass on to Adelaide, South Australia, and thence to Van Dieman's Land, where they might put the Melbourne and Sydney mails on board of the steamer already plying between Van Dieman's Land and those places. By this route the Sydney people would receive their letters quite as soon as though their interests alone had been consulted, according to the desire of the disinterested committee before alluded to; whilst Van Dieman's Land would gain a few days, and South Australia and Western Australia would be allowed to share in the general advantage, from which they would otherwise be entirely excluded. But the Government and the public would also be gainers by the route which we suggest. It would be much cheaper to them, because it would be much more profitable to the company that carried it out. The colony of South Australia is now a populous country, and becomes more so every year; but the Steam Company would carry no passengers and no goods for South Australia (perhaps not even for Van Dieman's Land), if the route to Sydney were to be by Port Essington and Torres Straits. The two colonies of South and Western Australia deriving no benefit from such a course, could give no support to the company. Government hitherto has resisted the efforts of the Sydney merchants, and refused to sanction the proposal of Mr. Waghorn, but chiefly upon the ground of expense. And there is no doubt that Ministers would be guilty of a gross misdemeanour, were they to consent to apply 100,000 pounds per annum of the public money in furtherance of a scheme designed for the exclusive benefit of a single colony. It is the duty of Government to see that any sum which may be granted shall be so applied as to confer the most extensive benefit upon all the Australian colonies. That measures ought to be immediately taken to ensure a regular communication between the home country and every one of her colonies is a matter of no doubt to us. The want of this has long appeared to be one of the grand errors of colonial legislation. Let us hope that the day is not far distant when this crying evil shall be remedied. Now that steam navigation has come so generally into use, there is no valid reason why it should not be made the means of uniting together, as it were, the different outposts of the empire, drawing them more closely towards their parent country as to a common centre. It is full time that a greater appearance of sympathy were exhibited at home for those distant settlements which have now become the principal markets for British produce, and which, therefore, deserve something more at the hand of Government than what they have so long been accustomed to find -- alternate periods of tyranny and neglect.