Chelyuskin, Cape, in Siberia, the most northerly point in the Eastern hemisphere.
Hence he has been entirely unable to decide whether the old doubts concerning Chelyuskin's results could be revived or not.
A few years before the voyage of the Vega, Chelyuskin's trustworthiness was still doubted.
Chelyuskin's original account is found in the same volume, pp. 61-65.