The military and commercial necessities of Peru were met by caravans of llamas but even then human carriers were in general use. How the large stones found in some of the ruins of that country were transported is not known, but it must have been by human traction alone. Northward from Ecuador to the Colorado River there is no evidence of anything but human carriage. Tribute was brought to Mexico City by brigades of carriers. Chairs and litters for the transportation of people were used throughout the area of intense culture, and to some extent in the Gulf regions of the United States. In all areas there were special appliances for holding the pack upon the back. While only the lightest loads were carried upon the head, in contrast to the African negro way, a widespread method was to support the pack by a strap over the forehead, one form of which is now known as a "tumpline." Perhaps the most unique appliance is the kia of the Pima tribes in Arizona.[1] (Fig. 12.)
Before proceeding with our subject we may consider the extent to which animals were domesticated for food. The only place where a pastoral culture was noted is again in Peru. The Spaniards found the llama in great domesticated herds, sometimes reaching the thousands. In addition to their use in transportation, they were slaughtered for their flesh and sheared for their wool. The alpaca was also herded for its superior wool. The use of milk seems to have been unknown here as well as in other parts of the New World. In fact, the Indians as a whole seem to be as deeply prejudiced against milk as the Chinese,[2] for it is with the greatest difficulty that our reservation tribes can be led to care for milk cows. The Spanish Americans seem to have been influenced by this also, for though great ranches were maintained it was seldom that a single animal was milked. This is still shown in our western states where cattle raising was derived from Mexico and gives us a fine illustration of culture diffusion.
Dogs were used as food, but not everywhere. The Spanish colonists found them in general use in Mexico, and in the West Indies the first discoverers found a small edible dog. In North America, dog flesh was eaten in parts of the bison area,
