July 11th [10th and 11th]. From our encampment we travelled nearly south, and crossing a small ridge dividing the waters of the Platte from those of the Arkansa, we halted to dine on a tributary of the latter river.[149] In an excursion from this place, we collected a large species of columbine, somewhat resembling the common one of the gardens. It is heretofore unknown to the flora of the United States, to which it forms a splendid acquisition. If it should appear not to have been described, it may receive the name of aquilegia cœrulea.[150] Our road during the morning lay for about twelve miles close along the foot of the primitive mountain, having on our left some of the sandstone ridges and hills already described. On our right, the brown and naked granite rose in shapeless masses far above our heads; and occasionally, as we passed the deep fissures worn by the descending torrents, we caught a view of the distant summits glittering with eternal frosts. In the valleys towards the east were many insulated and lofty hills, with perpendicular sides, and level table-like summits. They are sometimes disposed in parallel, but interrupted ranges, and sometimes irregularly scattered, without any appearance of order. In every instance they were found to be the remains of extensive beds of sandstone; insulated portions of which had been preserved from disintegration, while all the contiguous parts had crumbled down and been washed away. [149] The route described on the next few pages is an impossible one. Chittenden characterizes it as "wholly indefinite and unsatisfactory" (_American Fur Trade_, p. 59). The date "July 12th," on the next page, does not appear in the Philadelphia edition, and was apparently inserted to remedy the confusion; it increases it, however, since the accounts of the journeys of two days (July 10 and 11) are intermingled in the text itself. From the camp of July 8 and 9, the party might, by noon of the tenth, have arrived opposite Castle Rock, which gives its name to the present seat of justice of Douglas County. This, however, would not bring them to a tributary of the Arkansas; by noon of July 11 they could have reached the upper waters of Monument, a branch of Fountain Creek, which unites with the Arkansas at Pueblo. The camp of July 10 is probably accurately located on the map, a short distance below Castle Rock. On the morning of the eleventh, the direction taken was almost due south, across the watershed between the Platte and Arkansas, which at this point is almost on the line between Douglas and El Paso counties. The map exaggerates the length of Boiling Spring Creek (see succeeding volume, note 10), or Fountain Creek, a branch of which (Monument Creek) they first encountered almost on the county line. The afternoon march carried them somewhat south of the base of Pike's Peak, necessitating the retracing of their route on the morning of the twelfth. The route on the eleventh probably lay through the