Bokförlaget Forum (Wine and Other Beverages)" and Einar Wallquist’s medical book "Våra sjukdomar (Our Diseases)." In 1947, Norwegian ethnographer Thor Heyerdahl made and sailed a raft of balsa wood, called Kon-Tiki, from Peru to the Polynesian Islands. The purpose of the trip was to prove that the Polynesian inhabitants originated from America rather than Asia. In the academic world, most people thought Heyerdal a fanatic and questionable scientist. In 1948, Norsk Gyldendal published Heyerdahl’s story, which then was sent to Bonniers for consideration, Helms managed to persuade Kaj Bonnier to have it transferred to Forum. "Expedition Kon-Tiki (The Kon-Tiki Expedition)" was a
Pre-Columbian rafts It was during these trade voyages that South American sailors may have introduced metallurgy to Mexico. The purported trade between Ecuador and Mexico consisted of luxury items, including Spondylus (spiny oyster) and Strombus (conch) shells, which were prominently traded from their origins in the warm ocean waters of Ecuador throughout the Andes and up and down the coasts of South America. Since the voyage of the Kon-Tiki in 1947, there have been numerous crossings of the Pacific Ocean by raft from South America to Polynesia. In the 1990s, four attempts to sail a raft from Ecuador to Mexico failed, although