The moon set soon after midnight, but we managed to readjust our luggage by the light of greased paper spills, and entered the gates of the foot-hills before the watch-call of the night-hawk had been silenced by the reveille of the iris-crows. A keen land-breeze, tumbling the mists through the fens of the Tierra Caliente, gave promise of a bright day. What wonderful perfumes the morning wind brews from the atmosphere of a moist tropical forest-land!--scents that haunt the memory more persistently than the echo of a weird song. No latter-day nose could analyze these odors and trace them to their several sources; but with or without an attempt at further classification, they might be primarily divided into sweet and pungent aromatic smells, the latter prevailing in the coast jungles, the former in the mountain forests. A few of the first named--the spicy scents--are so peculiar that, once identified, they can be easily recognized: here, for instance, the effluvium of the musk lianas, whose flowers diffuse a sort of odorous diapason which predominates, even through the bouquet-medley of the South Mexican flora. As the white streaks in the east assumed a yellowish tint, the paroquets in the crests of the pino-palms saluted the morning with sudden screams; the multitudinous voices of a crow-swarm approached from the coast forests; two and two, and in a series of pairs, the macaws came flying across the sky; and in our near neighborhood the startling cry of the _chachalaca_ or jungle-pheasant went up from an hibiscus thicket. Softly first, then louder and louder, the _calanda_, the mocking-bird of the tropics, intonated its morning hymn, and the fluting curlew rose from the grass like a skylark; but a sweeter sound to our ears was the murmuring of a little brook at the roadside. We had reached the region of rocks and swift-flowing waters. Of reptiles, as of Red Republicans, it may be said that they are least dreaded in the countries where they most abound. While a New England boarding-school virgin goes into epileptic spasms at the aspect of a blindworm, the young Mexicanas surround themselves with a variety of ophidian pets, and view a freckled tree-snake and a gay butterfly with equal pleasure or equal unconcern. A little barefoot girl that met us on her way to the spring put her toes caressingly on the smooth hide of a green-and-white speckled _Vivora mansa_ that wriggled across the road; and our barelegged portador kicked dozens of good-sized bush-snakes out of our path after noticing that they frightened our young travelling companion. More than ninety per cent of all South American snakes are as harmless as lizards, and the four or five venomous varieties are well known and easily avoided.