observe the products of a colder climate; for this changing vegetation is a barometer, which, in Mexico, marks the ascent and descent as regularly as the most nicely-adjusted artificial instrument. So accurately are the stratas of vegetation adjusted to the stratas of the atmosphere which they inhabit, as to lead the traveler to imagine that a gardener's hand had laid out the different fields which here rise one above another upon the side of the mountain that constitutes the eastern inclosure of the table-land. The fertility of the soil did not seem to diminish; it was only the character of the vegetation that changed step by step, as we wound our way up toward the summit of the Perote.
MOUNTAIN VIEW.
We changed horses at La Hoya, a place memorable in the annals of civil war, as the spot where General Rincon blocked up the pass when Santa Anna was retiring in 1845, a fugitive from the country. Here the road becomes so steep as to induce the traveler to walk a little, for the better opportunities he can thus have of surveying the novel sights that present themselves at every turn of the road. When he is fatigued with climbing, and breathing the peculiar air of this altitude, he can seat himself by the roadside to wait the arrival of the coach, and to catch momentary glimpses, among floating clouds, of the country through which he has passed in his ascent from the coast. He can see a long distance through such a rarified atmosphere; but it is only a bird's-eye view, as the mass that is heaped together is more than his vision can fully take in, before a cloud, ragged and torn, has passed across the picture. The eye is delighted more with the details of a scene, than with this mass of all the excellences of all the climates.