3. Comparative geography and ethnography of ancient and modern America, 5 books, with maps, &c., begun 1824.
4. Ancient monuments of North and South America, compared with the primitive monuments of the eastern hemisphere, 3 books and 200 plans, &c., 1822.
5. TELLUS, or the primitive History of the Earth and Mankind in Protholia, Oceania and Neotholia, with the ancient and modern general ethnography, 30 books, begun in 1821.
6. Synglosson, or compared examination of all languages and nations, 6 books, begun 1825.
7. Iconographical Illustrations of all my historical works and travels, containing over 1000 maps, plans, views, costumes, portraits, alphabets, symbols, implements, &c., in 10 cartoons, begun 1816.
8. Travels in North America, in 1802, 3, 4, and from 1815 to 1835. In many manuscript books and journals.
I have often been apprehensive of the fate of Boturini, for these interesting manuscript and long researches. This has happened already for one of my manuscripts. As early as 1825 I sent to the Academy of Science in Boston, a manuscript of 240 pages, being an _account of the materials yet existing for the history of the nations and tribes of America before Columbus_. This was for an offered prize of $100: which was never awarded, although my memoir was declared the best sent. And instead of depositing this manuscript in the library of the American Antiquarian Society as requested, it has been _lost_ or _stolen_. If never recovered, and that the public may judge of the merits of it, at such an early period of my historical studies: I will state the principal results of my enquiries therein; which tenor, together with their length, were the ostensible reasons for not awarding a prize probably never meant to be awarded.
I therein proved in 1825, 1st. that there are yet materials enough, notwithstanding the loss of many, for an ancient history of America.
2. That a complete American history ought to employ and combine all the materials afforded by geology, geography, physics, chronology, physiology, ethnology, archeology, philology, on America, with all the traditions of the Americans.
3. Geology and physical geography indicates the cradles and ancient settlements of mankind, the revolutions of nature, the places unfit for population, the means of access, probable route of colonies, &c.