NICOLAS THOMAS MARION DUFRESNE was an officer in the French navy, and was born at St. Malo in 1729, In 1771 he was commissioned at his own desire to restore to the island of his birth a Tahitian who had accompanied Bougainville to France. He was also charged to ascertain if a continent or islands existed in the Southern Ocean whence useful products might be exported to Mauritius or Reunion.
The middle of the eighteenth century is approximately the period in which the collection and classification of exotic plants and animals became one of the chief objects of exploratory voyages. This was also one of the aims of the expedition under the command of Marion and Commerson, a botanist who had accompanied De Bougainville, was to have accompanied Marion also. But he was unable to go, so that no botanist and also no zoologist made the voyage. Crozet, however, who was second in command of the Mascarin, has left not a few observations relating to the birds which he saw at sea during the voyage, or in the countries which he visited. They are embodied in his book Nouveau Voyage à la Mer du Sud.
The native of Tahiti fell sick shortly after the commencement of the voyage, and was put ashore in Madagascar, where he died. One of the objects of the voyage thus ceased to exist. The first undiscovered land which was sighted after leaving Madagascar was named Terre d'Espérance, and subsequently, by Cook, Prince
