The township of Melbourne on its north bank, five miles from the river's mouth, we found a very bustling place. Nearly two thousand persons had already congregated there, and more were arriving every day, so that great speculation was going on in land. We were delighted with the park-like appearance of the country, and the rich quality of the soil. This was the most fertile district we had seen in all Australia; and I believe everyone allows that such is the case. Its reputation indeed was at one time so great, that it became the point of attraction for all settlers from the mother country, where at one time the rage for Port Phillip became such, that there existed scarcely a village in which some of the inhabitants, collecting their little all, did not set out for this land of promise, with the hope of rapidly making a fortune and returning to end their days in comfort at home. Everyone I think must leave with such hopes; for who can deliberately gather up his goods and go into a far country with the settled intention of never returning? A rocky ledge extends across the river fronting the town, upon which the plan had been formed of erecting a dam for the purpose of keeping the water fresh; whereas now the river is salt above the town, and the well water is not particularly good. The Yarra-yarra is not navigable even for boats many miles beyond Melbourne, on account of the numerous falls. Some of the reaches above the town are very picturesque--still glassy sheets of water stretch between steep banks clothed with rich vegetation down to the very edge of the stream--the branches of the trees droop over the smooth surface, and are vividly reflected; and substance is so perfectly blended with shadow, that it is impossible to detect where they unite. At the western extremity of Melbourne is a low round hill, fifty-seven feet above the level of the sea by our observations, and about thirty above the town. There are now none of the aborigines in the neighbourhood of Melbourne; but I learned that some of their old men remember the time when the site of the town was under water, in consequence of one of those sudden inundations that happen in Australia, and are so much in keeping with the other strange things that occur there. SINGULAR CUSTOM.