140 Feaiherstonhaugh^s Geological Report. 



Wisconsin and Upper Mississippi. Within a few yards of 

 these ledges, and north of them, a beautiful pellucid stream 

 comes in, containing the purest water I had seen in the 

 country. I could not learn that any name had been given to 

 it, and as it is in the immediate vicinity of the first calcareous 

 rock I had met with in place here, and its purity rendering it 

 a very rare stream in a country where all are turbid, I named 

 it Abert's run, after Colonel Abert, of the United States 

 army, and chief of the Topographical bureau. Higher up 

 on the right bank is the village of Wahmundee Indootah, or 

 Red Eagle. The next stream is Wointseah Watapah, or Rush 

 river, rising far up in the country, and comes in on the left 

 bank ; after it succeeds Chankeoota Oeanka, or the end of the 

 Bois Franc or Free Wood district, a stream coming in on the 

 left bank. About fifteen miles further we came to a place called 

 Myakah or White Rock, on the right bank, an escarpment 

 consisting of about forty feet of granular sandstone surmounted 

 by ten feet of fawn-colored limestone, the same as that at 

 Abert's run. This sandstone is formed of semi-transparent 

 grains, loosely adhering, with nodules here and there, where 

 they are cemented by a paste of clear siliceous matter, the 

 whole making a hard, flinty mass, resembling siliceous oolite. 

 At the junction of the limestone with the sandstone, there is 

 a seam of marly mineral matter, containing a great deal of 

 silicate of iron, of a bluish-green color. I had seen traces of 

 this in the bluffs at Prairie de Chien. Eight or nine miles 

 further on is Traverse des Sioux, an establishment of the 

 American Fur Company. This is a noted • crossing place of 

 the Sioux Indians in old times. A short distance from this 

 trading-place, a small stream comes in on the right bank, 

 called Wee-wee or Moon creek. This stream, before it falls 

 into the St. Peter's, recedes a little, and describes a semi-circle 

 before it approaches the river again, and repeats this several 

 times, so that several small crescents are described by the 

 stream before it joins the river. In the Nacotah tongue wee 



