and neatly built. Such parts of their buildings as
require strength are made of burnt bricks; but their dwelling-houses
are all constructed of bamboos, canes, and bricks only dried in
the sun, which are sufficiently durable, as it never rains in Peru.
Instead of roofs, they are merely covered over with mats, on which
ashes are strewed, to keep out the dews. The small river of Lima,
or _Runac_, consists mostly of snow-water from the neighbouring
mountains, which are covered all the year with snow, that partly
dissolves in the summer-season, from September to March.

One would expect the weather to be much hotter here; but there is
no proportion between the heat of this part of America and the
same latitudes in Africa. This is owing to two causes; that the
neighbourhood of the snowy mountains diffuses a cool temperature
of the air all around; and the constant humid vapours, which are so
frequent that I often expected it to rain when I first went to Lima.
These vapours are not so dense, low, and gloomy, like our fogs, nor
yet are they separated above like our summer clouds; but an exhalation
between both, spread all around, as when we say the day is overcast,
so that sometimes a fine dew is felt on the upper garments, and may
even be discerned on the knap of the cloth. This is a prodigious
convenience to the inhabitants of Lima, who are thus screened half the
day from the sun; and though it often shines out in the afternoon, yet
is the heat very tolerable, being tempered by the sea-breezes, and
not near so hot as at Lisbon and some parts of Spain, more than thirty
degrees farther from the equator.

The entire want of rain in this country induced the Indians, even
before the conquest, to construct canals and drains for leading water
from among the distant mountains, which they have done with great
skill and labour, so as to irrigate and refresh the vallies, by which
they produce grass and corn, and a variety of fruits, to which also
the dews contribute. A Spanish writer observes that this perpetual
want of rain is occasioned by the south-west wind blowing on the coast
of Peru the whole year round, which always bears away the vapours from
the plains before they are of sufficient body to descend in showers:
But, when carried higher and farther inland, they become more compact,
and at length fall down in rain on the interior hills. The inhabitants
of Peru have plenty of cattle, fowls, fish, and all kinds of
provisions common