From Ambo to the city of Huanuco we have five leagues of a charming ride; and from Ambo downwards, the Vale of Huanuco may be said to commence. In this vale the writer resided for three years. The year is, as usual, divided into the wet and dry seasons, observing the same periods of change as we have already noticed to belong to the seasons on the high Sierra. In this valley, however, snow never falls, except on the summits of the highest hills; and the thermometer of Fahrenheit is seldom seen to rise above 72° in the shade of the veranda, or wide-spreading fig-tree. In the hottest day, when every little stone on the surface of the newly-turned field glistens in the sunbeams, so as to torment the sight, the thermometer rises very high on being exposed in the open air to the direct rays of the sun; but, upon being removed into the shade, it again falls to a very few degrees above 70°; and scarcely ever throughout the whole year is it seen to sink under 66° of the night thermometer placed within doors,—thus manifesting an equability of atmospherical temperature altogether as extraordinary as it is benignant. So small, then, is the range of the thermometer in this fine locality, that the state of the internal circulation of our frame is but little disturbed by sudden changes induced by vicissitudes of temperature. To the uniform mildness of its atmosphere it may be principally owing that pulmonary consumption is as little a disease of this favoured locality as ague;[8] for we never, during the period of three years that we resided here, had occasion to know of a single instance in which this disease originated in the valley; but those who, by residing in other situations, had their lungs nearly wasted by consumption and spitting of blood, have, in different parts of this valley, found a temporary asylum which afforded a prolongation of life when entire restoration to health was physically impossible. The climate is sometimes complained of as too dry, it being only during the rainy months that the perspiration commonly becomes sensible on moderate exertion. During the greater part of the year the reflected rays of the sun on the sides of the valley would render it intolerably hot, were it not for the daily breeze that, from about 11 A.M. to 3 P.M. comes with uniform regularity from the Montaña, through the aperture in the mountains along which the river of Huanuco rolls towards the Huallaga and great Marañon.