No former expedition had reaped such a harvest of discoveries and hydrographical, physical, and ethnological observations. The learned and ingenious investigations pursued by Cook elucidated many of the difficulties of earlier navigators. He made various important discoveries, amongst others, that of New Caledonia and Easter Island. The non-existence of an antarctic continent was definitely ascertained. The great navigator received the fitting reward of his labours almost immediately. He was nominated ship's captain nine days after his landing, and was elected a member of the Royal Society of London on the 29th of February, 1776. CHAPTER V. CAPTAIN COOK'S THIRD VOYAGE. I. Search for the lands discovered by the French--Kerguelen Islands--Stay at Van Diemen's Land--Queen Charlotte's Strait--Palmerston Island-- Grand rejoicings in the Tonga Islands. At this date the idea which had sent so many explorers to Greenland was in full force. The question of the existence of a northern passage between the Atlantic and the Pacific, by way of the Asiatic or American coasts, was eagerly discussed: and should such a passage exist, was it practicable for ships? The attempt had quite lately been made, to discover this outlet in Hudson or Baffin Bays, and it was now determined to seek it in the Pacific. The task was an arduous one. The Lords of the Admiralty felt that it was essential to send out a navigator who had experience of the dangers of the Polar Seas, and one who had shown presence of mind in the face of danger; one moreover, whose talents, experience, and scientific knowledge might be of use in the powerful equipment then in course of preparation. In Captain Cook alone were all the requisite qualities to be found. The command was offered to him, and although he might have passed the remainder of his days in peace at his post in the Greenwich Observatory, in the full enjoyment of the honour and glory he had gained by his two voyages round the world, he did not hesitate for a moment. Two ships, the _Resolution_ and the _Discovery_, were placed under his command. The latter was under the orders of Captain Clerke; and the equipment of both was similar to that of the last expedition.