They held the stalks of the fruit they plucked in their mouths, filling with them large bags left at intervals, and from the manner in which they worked I suspected that they had no opposable thumbs--that the whole hand had to be used like the paw of a squirrel to grasp an object.

I pointed to these, directing my companion's attention and asking, "What are they ?" "Ambau," he said, but apparently without the slightest interest in their proceedings.

Indeed, the regularity and entire freedom from alarm or vigilance which characterised their movements, convinced me that both these and the birds we passed were domesticated creatures, whose natural instincts had been turned to such account by human training.
After a few moments more, we came in sight of a regular road, in a direction nearly at right angles to that which followed the course of the river.

Like the path, it was constructed of a hard polished concrete.

It was about forty paces broad, and in the centre was a raised way about four inches higher than the general surface, and occupying about one-fourth of the entire width.