We of course returned by a different route through Indiana, passing from Princeton to Portersville, and from thence through Paoli, Salem, and New Lexington, to Madison. The country about Madison is hilly and broken, which makes travelling tedious in the extreme. From the mouth of the Big Miami to Blue river, a range of hills runs parallel to the Ohio, alternately approaching to within a few perches of the river, and receding to a distance of one to two miles. Below Blue river the hills disappear, and the land becomes level and heavily timbered. There is also another range of hills, extending from the Falls of Ohio to the Wabash in a south-westerly direction, which are called the "knobs:" to the west of these are the "flats;" and from the Wabash to lake Michigan the country is champaign. Indianopolis is the capital of Indiana, and is seated on the White river. This state averages about 270 miles from north to south, and 144 miles from east to west: area, 37,000 square miles, or 23,680,000 acres. The population in 1810, was 24,520--in 1820, 147,178: white males, 79,919; white females, 69,107; slaves, 190; militia in 1821, 14,990. The present population is 341,582. Vast quantities of hogs are bred in the state of Indiana, and are suffered to rove at large in the forests in search of mast. They are in general perfectly wild, and when encountered suddenly bristle up like an enraged porcupine. Their legs are long; bodies thin; and tail lengthy and straight. I was informed that if one of those animals be wounded, its screams will draw an immense concourse of its brethren around it, and that the situation of a person under these circumstances, is by no means void of danger; as they will not fail to attack him _en masse_. We were once very nigh getting into a scrape of this description. Driving along through the forest, we had to pass a tract covered with a thick growth of brushwood--my friend seeing something stirring among the bushes, drew up, and taking it for a deer, called out to me to fire--I stood up in the vehicle, and levelled where I saw the movement, when, lo! out starts a bristling hog, with a grunt just in time to escape with a whole skin.