I am in possession of an immense mass of evidence concerning the passage of the Mound Builders or Yuchi from America to Siberia. Curiously enough, the apparently darkest part of the subject is that upon which we will get the greatest light.
Memoirs and Critical Observations concerning the situation of the northern regions of Asia and America, according to the latest discoveries; shewing the great probability of there being a passage to the East Indies, through the North East Sea. Lausanne.
To the Editor of the Sun: SIR: There have been so many comments in the papers, and I receive so many letters which it is impossible for me to answer, […]