& Winthrop in 1887. The sandalwood trade In 1825, trader and adventurer Peter Dillon discovered the island's large reserves of sandalwood (Santalum austrocaledonicum), valued in China for its aromatic oil and as a carving wood. Dillon found that his trade goods were not sufficient to entice Erromangans to cut the timber for him, so he left without gathering any sandalwood. News of his discovery brought other outsiders to Erromango to exploit the resource, and this caused conflict between the Erromangans and the traders. In 1830, King Kamehameha III of Hawaii sent two ships with 479 Hawaiians on board to seize control of Erromango and its sandalwood, under the command of Boki, ruler-designate of Erromango. Their arrival in Cook's Bay coincided with the arrival of two other groups of traders intent on exploiting the sandalwood; two ships, the Dhaule and the Sophia, both crewed by 330 Rotuman labourers and another ship, the Snapper, with a crew of 113 Tongan labourers on board, had all arrived just before the Hawaiian vessels. The Erromangans resisted the Hawaiians' takeover attempt, and the Hawaiians' hostile intent turned the Erromangans against the other interlopers and their Polynesian crews. Fever killed most of the Tongan and Hawaiian labourers, and just 20 Hawaiians returned to Hawaii to tell the story of their failed occupation. A crash in the price of sandalwood shortly after deterred most traders until the mid-1840s, but even when prices rose again, the combined risks of attack on shore, uncharted reefs, storms and hurricanes meant that sandalwood trading was a highly speculative venture. Some traders such as Robert Towns and James Paddon established stations on Erromango or nearby islands such as Aneityum and Île des Pins in New Caledonia to reduce their costs. By 1865 though, Erromango's sandalwood resource was exhausted. Introduced diseases and depopulation Erromango's population prior to European contact is estimated at approximately 5,000, though some estimates are as high as 20,000. European visitors brought diseases such as influenza, smallpox and measles to which the local population had no immunity. Sixty percent of Erromangans died during a smallpox outbreak in 1853 and a measles epidemic in 1861. Contemporary accounts by missionaries blamed the sandalwood traders for the outbreaks. Erromangans sought reprisal by killing European and Polynesian missionaries (e.g. George N. Gordon), their converts and other visitors. The labour trade and blackbirding Between 1863 and 1906, around 40,000 people from what was then the