Having accomplished his object in this part of the country, Leichhardt returned to Sydney, where he found public opinion strongly excited on the question of exploration. Sir Thomas Mitchell, having led three expeditions into the interior with great success, was mainly instrumental in creating this outburst of enthusiasm, which called for other enterprises of a like nature and purpose. At this period, also, a keen desire was manifested for an overland route to Carpentaria as a highway, so far, to India, which was supposed to offer an unlimited market for Australian horses. Already a settlement had come into existence at Port Essington, which was reckoned a suitable _entrepôt_ for the prospective traffic. The one thing wanted was an overland route to this place, and it was generally thought the time had come when an attempt should be made to discover it. Sir Thomas Mitchell was again to the front, expressing himself ready for the undertaking, with Dr. Leichhardt as second in command. He had already arranged to proceed to his old depôt at Fort Bourke and to strike north for Carpentaria. But a fatal obstacle was unexpectedly interposed. Sir George Gipps, being in a bad humour with his advisers, refused to confirm the vote for supplies which the Council had unanimously passed, and, as a natural consequence, the whole project fell to the ground. This was a sore blow to Leichhardt, but it did not unman him. Despairing of help or countenance from the Governor, he volunteered to lead an expedition to Port Essington on his own account if private liberality should prove itself equal to the occasion. In a very short time sufficient resources were forthcoming, and Leichhardt now set himself to redeem his promise. I.