The filter of which I have before spoken has been packed all these many miles from Independence on the mule of George Carlton. He has spoken in favor of leaving it several times, but the consent of some of the company could not be had. What could be done? The poor mule was getting weak and poor.

Mr. Carlton took the filter from the pack and put it into a thicket and informed two or three whom he well knew were in favor of leaving it behind, and said if we would “keep dark” he would let it remain there. So the filter was left behind when we started.

In the afternoon we traveled 11 miles and camped at a spring.

Saturday, July 21.

Start in the morning and in ten miles’ travel come to some very strong alkali water. Travel 5 miles farther and dine at a good spring.

Go 5 miles in the afternoon. Wild sage is the principal production here.

Sunday, July 22.

Weather fine. Start in the morning and travel 20 miles. Camp on the Sweetwater River, a branch of the Platte, one mile above Independence Rock.

The country between the Platte and Sweetwater Rivers is very barren, destitute of timber, with very little grass or other vegetation, except wild sage. Much of the water is alkali, poisonous to cattle and horses and is entirely unfit for use. When water has evaporated here, a substance resembling saleratus may be gathered up in large quantities. In some cases it may be found on the surface three or four inches in thickness, white and pure as the finest pearlash manufactured; and on trial we found it equally as good for the purpose of making bread. We have seen large numbers of dead cattle by the roadside the past three days.

Monday, July 23.