It is the universal impression among western men that all writers have utterly failed in describing a prairie; at least, it is a rare thing to find one who has never seen a prairie whose conception of it is any thing like truthful.

The prairie lands of the West form a very large and important feature in the inducements to a new settler, their immediate cultivation giving him a start unattainable by long years of labor and deprivation in a heavily timbered country. The facility with which the prairies can be subdued, the abundant returns they yield, and their surpassing beauty and attractiveness, have enabled the States of the West to attain in twenty years a condition that has required a century in the older States. While a life-time is required in the East to cut down forests, remove stumps and rocks, and bring a farm into handsome shape, it is no uncommon thing at the West to find, in a single decade of years, that an energetic man has made and sold a half dozen farms. Possessed with that unexplainable fascination always connected with frontier life, we find pushing on westward, men who have made farms in Ohio, Indiana, Illinois, Wisconsin, Minnesota, and Iowa, still westward bound with a keen eye for a mill-power, a town site, or a country seat, which they readily dispose of to the next wave of emigration.

The rolling prairies of Wisconsin, Northern Iowa, and Minnesota, are very similar in character, and, strange as it may seem to an eastern man, occupy some of the most elevated portions of these States, and are destitute of that tall grass out of which novel writers have woven such frightful stories in their description of prairie fires.

The character of the prairies in the three States named, is chiefly undulating or rolling, although, in some of the western counties of Northern Iowa, there are long stretches of comparatively flat or level prairie lands. This rolling tendency is not on a horizontal line, but gradually ascending to a high elevation, and then gradually descending. Thus Koshkonong Prairie, in Dane County, Wisconsin, Attains an elevation of between 500 and 600 feet above Lake Michigan, and the views from it, over valleys and timber, highly cultivated farms and flourishing villages, is of the most extended character. On Bock Prairie, lying in the always charming valley of the Rock River, are some elevated portions of prairie land that command the most enlivening vistas of busy western life. The flourishing city of Janesville, the long lines of railroad, and the vast fields of waving grain, excite emotions of surprise among all who see them for the first time. The prairie at Monroe, west of Janesville, attains a height of 500 feet above Lake Michigan, and from thence running northward, the prairie rises until it almost reaches the summit of the Blue Mounds, upwards of 1,000 feet above the lake.

From this point the view is magnificent Some 40 or 50 miles distant, over the rolling prairie, interspersed with oak openings and bodies of timber, are seen the dim outlines of the Platte Mounds, up whose sides climbs the swelling prairie; and from thence still onward looms into view the Sinsinawa Mound, the last prairie land-mark east of the Mississippi. Crossing the great river, fifteen to twenty miles, and we are again on the beautiful prairie, now 600 feet above the river, its undulatious rising and falling like a heavy swell on the ocean; now dipping into the wooded valley of a stream, then rising to the summit, then again descending, it rolls on westward, gradually rising, until, in Cerro Gordo County, 180 miles west of the Mississippi, the elevation is upwards of 700 feet above the river. There are seldom any abrupt breaks in a rolling prairie, except as it approaches the valley of a stream, or rook or gravel crops out. The swells are usually rounded, and grassy slopes and dimples flow gently together.

The prairie soil, as a general thing, is dry, and exceedingly rich and fertile, easily cultivated, and admits of the use of all the improved agricultural machinery. Plowing is done with a fraction of the labor required among the stamps and stones of an eastern form. Although it is usual at the West to speak of the prairie in its native condition as wild land, it is in that form more easily cultivated than improved land at the East, and, except in the matter of buildings and fences, a farm can be made with less labor and less money than one can manure and cultivate what are called handsome farms at the East; in fact, such wild land, of almost inexhaustible fertility, can be purchased within less than ten miles of a railroad depot, for about the same price per acre as it costs to manure land at the East; say from $800 to $1,000 for a quarter section of 160 acres.

A rolling prairie is seldom very extensive. It may have great length, but not width. Groves of timber are almost always to be seen, and one does not often get "out of sight of land," as on the more level prairies. Rolling prairies are usually well watered. We have seen in the course of a day's ride innumerable ice-cold springs. Fountain Prairie, in Columbia County, Wisconsin, is so called from the number of springs and spring brooks that are found on it; and at Waukon, the county seat of Allamakee County, Iowa, which is located on one of the most beautiful of all prairies, some 600 feet above the level of the Missis- sippi, are perhaps a dozen or more handsome springs, gushing up in the streets, and in different parts of the village. Union Prairie, Washington Prairie, and many others we might name in that vicinity, are remarkably well watered, as well as unequaled in that indescribable beauty belonging only to rolling prairie land.

But we must make another article on this subject; it is too vast to be disposed of in a hurry. The Prairies are destined to form a very important feature in our Agricultural and Horticultural wealth, and, in spite of all the misrepresentations about the hardships and privations of Western life, will become the most thickly settled and wealthy portion of our land.

[Whatever misconceptions may have been produced by the highly wrought descriptions of novel writers, the readers of the Horticulturist at least will now have a just idea of the magnificent prairies of the West. That many false notions exist in the minds of those who have never seen a prairie, can not be doubted; and it is equally not to be doubted that these notions have been legitimately drawn from the sources alluded to above. Cognosco has toiled over them time and again on foot in the pursuit of his profession, and has thus acquired a minute knowledge of their formation and general appearance which no mere passing traveler could hope to attain. We shall look for a continuation of the subject with much interest. - Ed].