The Táríkh-i Alfí, in a passage relating to Sultán Jalálu-d dín's proceedings on the Indus, mentions that Sadúsán was subsequently called Sístán. Though the writer here commits the common error of confounding Sístán with Sihwán, or Siwistán, on the Indus, yet he leaves us in no doubt what correction to apply, and we thus derive from him an interesting piece of information; for the position of Sadúsán, which is so frequently mentioned in the Arab accounts of Sind, has not hitherto been ascertained.