1. The limestone pipe indicates the work of the savage, or aborigines. 2. The third indicates the age of French influence over the Indians. An intelligent French gentleman says such clay pipes are frequent among the town population in parts of France. 3. The second and most curious seems to indicate an earlier age and people. The beads found at Fort Hill are long and coarse, made of baked clay, and may have had the same origin as the third pipe. Fort Hill cannot have been formed by the French, as one of their posts to aid in the destruction of the English colonies. In 1689, or 156 years ago, the French in Canada made various attempts to destroy the English colony of New-York. If the French had made Fort Hill a post as early as 1660, or 185 years ago, and then deserted it, the trees could not have grown to the size of the forest generally in 1810, or in 150 years afterwards. The white settlements had extended only “twelve miles west of Avon” in 1798, and some years after 1800, Fort Hill was covered with a dense forest. A chesnut tree cut down in 1842, at Rochester, showed 254 concentric circles of wood, and must have been more than 200 years old in 1800. So opposed is the notion that this was a deserted French post. Must we not refer Fort Hill to that race which peopled this country before the Indians, who raised so many monuments greatly exceeding the power of the Indians, and who lived at a remote era?” * * * * * H. R. SCHOOLCRAFT, Esq.: I forward you the observations on Fort Hill, for your use. My speculations are added for my pleasure, and you will use them as you please. In great haste, I am obliged to close. Your obedient, C. DEWEY. (H.) Letter from Rev. Gilbert Rockwood to Henry R. Schoolcraft. _Tuscarora Mission, August 1_, 1845. SIR:—In the following communication, you can make use of such statements as you may deem proper. If all the statements should not be necessary for your official objects, yet they may be interesting to you as an individual. This mission was commenced about fifty years since, under the care of the “New-York Missionary Society.” It was transferred to the “United Foreign Mission Society,” in 1821, and to the “American Board of Com. for Foreign Missions,” in 1826. The church was organized in 1805, with five persons. The whole number of native members who have united since its organization is 123. The present number of native members is 53; others 5, total 58. Between July 1st, 1844, and July 1st, 1845, there were only three admissions, two by profession and one by letter. About one-third of the population attend meeting on the Sabbath. Their meeting house was built by themselves, with a little assistance from abroad.