So strong, in fact, is the hold which this theory (in the broad sense, including also the Toltec and Aztec theories) has taken of the minds of both American and European archæologists, that it not only biases their conclusions, but also molds and modifies their nomenclature, and is thrust into their speculations and even into their descriptions as though no longer a simple theory but a conceded fact. Hence it is necessary, before a fair and unbiased discussion of the data can be had, to call attention to the fact that there is another side to the question. Unless some protest is presented or some expression of opinion is made on this point in my paper, the facts I give will be viewed through the medium of this "lost race" theory. This I desire, if possible, to prevent, and whether the "Indian theory" proves to be correct or not, I wish to obtain for it at least a fair consideration. I believe the latter theory to be the correct one, as the facts so far ascertained appear to point in that direction, but I am not wedded to it; on the contrary, I am willing to follow the facts wherever they lead. Although additional data will hereafter be obtained and many new and important facts be brought to light, yet, as I believe, sufficient evidence has been collected (though much of it remains unpublished) to indicate what will be the final result so far as this general question is concerned. We see that already the theory that these remains scattered over the face of our country from Dakota to Florida and from New York to Louisiana were the work of one people, one great nation, is fast breaking down before the evidence that is being produced. The following quotation from the last report of the Peabody Museum, which is repeated in substance in Science, June 27, 1884, p. 775, will serve not only to indicate the conflict which is going on in the minds of some of our most active and progressive archæologists on this subject, but also to show the difficulty of finding applicable and well-defined terms, and of clearly stating the real question at issue: