These log houses generally have one large room, in which the family cook, eat and lodge; and if any strangers come, they lodge in the same room with the family, either in a bed or on the floor, as may be the most convenient. They are built of logs locked together at the corners; the interstices filled with timber split like rails, and plastered over with clay. The roofs are covered with shingles about four feet long; the chimneys are built on the outside, with wood, and lined with clay; and the floor is made of split timber. Many of them are quite neat and warm. The next day, we passed a few miles down the river, crossed it, and travelled twenty or thirty miles west, towards Rock river. Our whole course lay through an open prairie. We could see timber on either hand. This day we found a number of gravel hills, the tops of which were coarse, naked gravel, and looked white at a distance. They were from ten to twenty feet high. We walked up to the top of the highest one, and had an extended view of the surrounding country. From this elevation, we could see the timber on the border of Rock river. We obliqued more to the south, came to a grove of timber and a house. Here we stayed that night. The next day we took a southeasterly direction, passed one house, and came to Fox river, where the Galena road crosses it. We forded the river, and travelling over an open rolling prairie twenty miles in a southeasterly direction, came to Walker's grove, on the Du Page river, forty miles south of Chicago. Here we found a tavern, saw and grist mill, and something of a village, having two or three framed houses among the log huts. The U.S. mail stage passes from Chicago through this place, Ottawa, Peoria and Springfield to St. Louis; and agreeably to our previous arrangement, I here left my companions, who returned to Chicago; and I took the stage for the south. I had travelled with them just long enough to be fully sensible of the great loss I sustained at parting. Thus it is with the traveller. He forms acquaintances and finds friends; but it is only to part with them, probably forever. Before I go into the lower part of the State, I shall stop here, and say a few words of the appearance, present condition and future prospects of the northern part of Illinois. I feel in some degree qualified to do this, not only from my own observation, but from information obtained from intelligent and respectable sources. CHAPTER VI. The northern part of Illinois is beautifully diversified with groves of timber and rolling prairies. The timber consists of the various kinds of oak, rock and white maple, beach, locust, walnut, mulberry, plum, elm, bass wood, buckeye, hackberry, sycamore, spice wood, sassafras, haws, crab apple, cherry, cucumber, pawpaw, &c. There is some cedar, but little pine. The shores of Michigan have a large supply of pine timber, and from this source the lumber for buildings at Chicago is obtained.