3 



the south bank of the river, about three feet above 

 the summer level of the water and about two 

 hundred feet north of the hilly edge of the valley. 

 From the river a crescent-shaped canal, about 

 thirty-five feet in length, had been dug halfway 

 around the base of the house. Connected with 

 this was a basin for winter food; this was five 

 feet deep and thirty-five feet in diameter. From 

 this a canal extended southward two hundred 

 and seven feet. One hundred and ten feet distant 

 from the house was a boulder that was about ten 

 feet in diameter. This was imbedded in about 

 two feet of soil. Around this boulder the canal 

 made a detour, and then resumed its comparatively 

 straight line southward. 



Over the greater portion of its length this 

 canal was four feet wide, and at no point was it 

 narrower than three feet. Its average depth was 

 twenty-eight inches. For one hundred and forty- 

 seven feet it ran through an approximately level 

 stretch of the valley, and seepage filled it with 

 water. A low, semi-circular dam, about fifty feet 

 in length, crossed it at the one-hundred -and 

 forty-seven-foot mark, and served to catch and 



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