on our oars and watched the result. The hunted fish doubles, springs aloft, and dives down, but all in vain; the black fin is not to be thrown off, double as he may. Anon the springs become more feeble, the pursuer's tail partly appears as he pushes forward with redoubled vigour, a faint splash is heard, the waters curl into an eddy, and the monster sinks noiselessly to enjoy his breakfast in the cooler depths beneath. And now we come to a sand bank running out some miles or so into the bay, and on which the water is less than three fathoms. Here the surface is broken by huge black objects, coming clumsily to the top, shooting out a jet of spray, and again disappearing. We let the boat glide gently along until she rests motionless above the bank, and stooping over the side with our faces close to the water, and sheltered by our hands, we can peer down into the placid depths, and see the huge animals grazing on the submarine vegetation with which their favourite feeding-place is thickly overgrown. But what animal is he talking about? the reader will ask. It is the dugong ('Halicore Australis'), or sea-cow, from whence is extracted an oil equal to the cod-liver as regards its medicinal qualities, and far superior to it in one great essential, for instead of a nauseous disagreeable flavour, it tastes quite pleasantly. It frequents the whole of the north-eastern coast of Australia, and when the qualities of the oil first became known, it was eagerly sought after by invalids who could not overcome their repugnance to the cod-liver nastiness. The fishermen, however, spoilt their own market, for greed induced them to adulterate the new medicine with shark oil, and all kinds of other abominations, so that the faculty were never quite certain what they were pouring down the throats of their unhappy patients. Thus the oil lost its good name, though I am convinced from personal observation that fresh, pure dugong is quite equal, if not superior, in nourishing qualities to cod-liver oil, and do not doubt that a time will come when it will enter largely into the Pharmacopoeia. The animal itself is so peculiar, that a brief description of it may not be here amiss. Its favourite haunts are bays into which streams empty themselves, and where the water is from two to five fathoms in depth, feeding on the 'Algae' of the submerged banks, for which purpose the upper lip is very large, thick, and as it turns down suddenly at right angles with the head, it much resembles an elephant's trunk shorn off at the mouth. Its length averages from eight to fourteen feet; there is no dorsal fin, and the tail is horizontal; colour blue, and white beneath. Its means of propulsion are two paddles, with which it also crawls along the bottom, and beneath which are situated the udders, with teats exactly like a cow's. Its flesh is far from bad, resembling lean beef in appearance, though hardly so good to the taste, and the skin can be manufactured into gelatine. I have often wondered that this most useful animal was not oftener captured. A fishing establishment with a good boat, a trained crew, and proper appliances for extracting the oil, could not fail to return a large profit to the proprietors, and every now and then they could kill a whale, one or more of which could be frequently seen disporting themselves in the waters of the bay. [Illustration -- BAY ON HINCHINBROOK ISLAND, WITH NATIVES.] By ten o'clock we had reached Garden Island, and beached the boat on a long