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 from the river, but a closer examination might reveal signs of them. Clearly the terracing was not done for the purpose of irrigation, for the terraces run up to the hilltops, where water could not be carried by gravity, and they are to be found also on either side of sharp and deep ravines or high ridges of harder rock.

. 116—Terraced valley slopes in the mountain belt west of Lake Titicaca.

The evidences of past Indian occupation of the andenes seems all the more significant because of the established life to which the cultural facts point. In some terraces and burial sites, as, for example, the cemetery on the main trail to Finca Cay- rani, are fragments of worked stone. Slabs of stone were laid across uprights, and in them are large earthen jars with remains of human skeletons barely covered with earth. In several of the jars I found charred cobs without corn upon them, as if the corn had been roasted and eaten off. Little digging has been done in the neighborhood; it is almost un- worked territory. We can be certain that a larger population than now lives in this particular valley once occupied the soil,