The three remaining ships of his convoy departed for the Magellan Strait at the southern tip of South America. A few weeks later (September 1578) Drake made it to the Pacific, but violent storms destroyed one of the three ships, the "Marigold" (captained by John Thomas) in the strait and caused another, the "Elizabeth" captained by John Wynter, to return to England, leaving only the "Pelican". After this passage, the "Pelican" was pushed south and discovered an island that Drake called Elizabeth Island. Drake, like navigators before him, probably reached a latitude of 55°S (according to astronomical data quoted in Hakluyt's "The Principall Navigations, Voiages and Discoveries of the English Nation" of 1589) along the Chilean coast. In the Magellan Strait Francis and his men engaged in skirmish with local indigenous people, becoming the first Europeans to kill indigenous peoples in southern Patagonia. During the stay in the strait, crew members discovered that an infusion made of the bark of "Drimys winteri" could be used as remedy against scurvy. Captain Wynter ordered the collection of great amounts of bark – hence the scientific name.