rd current rises from the whole face of the valley;
and to supply its place the little valleys and ravines that open into
it pour in each its stream of cooler air; and wherever two of these
streams, flowing in different directions, strike one another, a little
whirlwind ensues, and makes itself manifest as a sand-pillar. The
coachman's "molino de viento," as he called it, may very well have
happened, but it must have been a whirlwind on a large scale, caused by
the meeting of great atmospheric currents, not by the little apparatus
we saw at work.

There seems to be hardly a village in the plain; and the only buildings
we see for miles are the herdsmen's houses of stone, flat-roofed, dark
inside, and uninviting in their appearance, and the great cattle-pens,
the corrals, which seem absurdly too large for the herds that we have
yet seen; but in two or three months there will be rain, the ground
will be covered with rank grass, the corrals will be crowded with
cattle every evening; the mirage will depart when real water comes,
dust and sand-pillars will be no longer to be seen, and all the nine
horses and mules of the diligence-team, floundering, splashing, and
kicking, will hardly keep the heavy coach from settling down
inextricably in the mire. And so on until October, and then the season
of water, "la estacion de las aguas," will cease, and things will be
again as they are now.

In the usual course of travel to the capital, the second night would
have been passed at Puebla. This is the second city of the Republic,
and numbers some 70,000 inhabitants. As it was then in revolt, and
besieged by the President and his army, we made a detour to the north
when about 20 miles from it, in order to sleep for a few hours at
Huamantla, a place with a most evil reputation for thieves and vermin;
and about ten at night we drove into the court-yard of a dismal-looking
inn. Three or four dirty fellows stood round as we alighted, wrapped in
their serapes--great woollen blankets, the universal wear of the
Mexicans of the plateaus. One end of the serape was thrown across from
shoulder to shoulder, and hid the lower part of their faces; and the
broad-brimmed Mexican sombrero was slouched over their eyes; we
particularly disliked the look of them as they stood watching us and
our baggage going into the inn. A few minutes after, we returned to the
court-yard to complete our observation of them, but they were all gone.

A party of Spaniard