[33] Most unfortunately for this poor fellow, the other one of his tribe, who travelled with him, and could have borne testimony to the truth of his statements, died of the quinsey on his way home.

[34] From the very many excavations recently and anciently made, I could discover that these layers varied very much, in their thickness in different parts; and that in some places they were overlaid with four or five feet of rock, similar to, and in fact a part of, the lower stratum of the wall.

[35] In Silliman’s American Journal of Science, Vol. xxxvii., p. 394, will be seen the following analysis of this mineral, made by Dr. Jackson of Boston, one of our best mineralogists and chemists; to whom I sent some specimens for the purpose, and who pronounced it, “a new mineral compound, not steatite, is harder than gypsum, and softer than carbonate of lime.”

Chemical Analysis of the Red Pipe Stone, brought by George Catlin, from the Côteau des Prairies, in 1836:

Water	8.4
Silica	48.2
Alumina	28.2
Magnesia	6.0
Carbonate of lime	2.6
Peroxide of iron	5.0
Oxide of manganése	0.6
	——
	99.0
	——
Loss (probably magnesia)	1.0
	——
	100.0
	——

Note.—All the varieties of this beautiful mineral, may at all times be seen in the Indian Museum; and by the curious, specimens may be obtained for any further experiments.