Diodorus did not mention Pytheas by name. The association is made as follows: Pliny reported that "Timaeus says there is an island named Mictis … where tin is found, and to which the Britons cross." Diodorus said that tin was brought to the island of Ictis, where there was an emporium. The last link was supplied by Strabo, who said that an emporium on the island of Corbulo in the mouth of the river Loire was associated with the Britain of Pytheas by Polybius. Assuming that Ictis, Mictis and Corbulo are the same, Diodorus appears to have read Timaeus, who must have read Pytheas, whom Polybius also read.