Geographical terms, with the Indians, are found generally to unite some natural quality in the features or productions of the country with an indication of the locality; so that their names are not, as with us, simple nominatives, but (as in all other cases in these peculiar languages) the quality, action, etc., transfers itself to the object, and is expressed in a consolidated phrase. This is one of the most constant and distinguishing traits of these languages. Their nouns and adjectives, therefore, as well as their verbs, are transitives. Even their prepositions take a transitive character, and link themselves, as with 'hooks of steel,' to the objects to which they are applied. Thus their name for the island from which this letter is dated, is Place of the Gigantic Faëries, or, by another interpretation, Place of the Great Turtle. Detroit is, (literally translated,) Round-ward, or Rounds-by Place, denoting the sinuosities of the river in its approach. Sault St. Marie, 'At the Shallow Water with Rocks.' In another class of derivative words, the union of the substantive and adjective is without a local inflection, as in their name for Lake Superior, which is simply called, The Sea Waters; Mississippi, The Great River; Michigan, The Great Lake, etc. This principle is found most fully to pervade the Mohegan. I requested one of the chiefs of the party above referred to, to pronounce their name for Long-Island. He replied, PAUM-NUK-KAH-HUK, signifying, Place of the Long Land. The name of the coast opposite to this island, at the mouth of the Hudson, or rather, across the Sound, he pronounced MON-AH'-TON-UK. Dropping the local inflection UK, meaning place, or land, we have the elements of Manhattan, the latter of which preserves the original quite as well as the generality of Indian names transmitted by English enunciation. Philologists will perceive, farther, that the aspirate H would be very naturally prefixed to the second syllable, while the sound of O, being the sound of O in the French word _ton_, might be expressed, nearly as well, by some of the modified sounds of A.