From Surat we see him going over to Australia, and in 1845 participating in Captain Sturt's expedition, which had been sent out to explore the new Caspian Sea, supposed to exist in the centre of New Holland.

I was now alone in a most remote part of the world, for I was near three thousand leagues by sea farther off from England than I was at my island; only, it is true, I might travel here by land over the Great Mogul's country to Surat, might go from thence to Bassora by sea, up the Gulf of Persia, and take the way of the caravans, over the desert of Arabia, to Aleppo and Scanderoon; from thence by sea again to Italy, and so overland into France.

I took leave of my wife, and boy and girl, with tears on both sides, and went on board the Adventure, a merchant ship of three hundred tons, bound for Surat, captain John Nicholas, of Liverpool, commander.