No. 20. A small barrow, perhaps two feet high, and of proportionably rather large base, say 15 or 20 feet. No. 21. A mound similar to the preceding, same height. West of No. 16., base 25 feet. No. 22. Quadrangular. feet. Distance West from No. 16. 319 Base 73 No. 23. A mound of considerable regularity; but, owing to the thickness of the bushes, we cannot at present satisfy ourselves of its being artificial, though from its corresponding with No. 25. we suppose it to be so. No. 24. Appears to be an irregular mound 10 or 12 feet high, and 145 feet base. No. 25. Distant N. 10 E. 114 feet; and following this course 132 feet, we arrive at an elevation on its margin, as is also the case with No. 24., and which we have numbered 26. No. 26. Of which the base is 89 feet, and height 10 or 12.--It is distant W.N.W. from No. 26., 538 feet. No. 27. Is the largest mound, of an elongated-oval form, with a large step on the eastern side. feet. Distance N. from No. 26. 1463 Longitudinal base 319 top 136 Transverse base 158 top 11 Step transversely 79 Height by measurement 34 At the distance of a mile to the westward, is said to be another large mound.--JAMES. _Comment by Ed._ These mounds have been effaced by the growth of the city. The map of them prepared by Long's party was not published until 1861; it will be found on page 387 of the Smithsonian Institution _Report_ for that year. [084] The uncertainty with which the shell mentioned was classed as _Cassis cornutus_ renders its identification in terms of modern nomenclature practically impossible; such identification could be accurately made only by examination of the same specimen. The value of the argument relative to the origin of the Indians is, therefore, not easy to estimate.--ED. [085] From this fact it derived the name "Monk's Mound." The Trappist establishment was made in 1808, but was soon afterwards abandoned. The mound is one of the largest in the United States--the area of the base is six acres, that of the top two; the height is ninety-one feet.--ED. [086] Maturin.-JAMES. _Comment by Ed._ Charles Robert Maturin (1782-1816) was a Dublin dramatist and novelist. In his writings passages of undoubted eloquence were strangely mingled with extravagance and bombast. The incoherence of his plots and the inconsistency of his characters led many who recognized his genius to believe him mad.