was impossible for a human to roll 

 them up over the lower and outer face 

 of the dam, which was a network of 

 interwoven and criss-crossed saplings, 

 sticks and brush. The only other 

 method which appeared to us possible 

 was for the stones to be rolled or pushed 

 up the upper and inner slope of the dam 

 under water to the top. The inner face 

 of the dam was of course plastered over 

 with mud and was relatively smooth. 



We cooked our eggs, bacon and tea 

 on the bank at one end of the dam. 

 After we had eaten and drunken and 

 while I was engaged in taking some 

 photographs, we were agreeably sur- 

 prised to see our old friend, the bald 

 headed Chief Engineer, swimming down 

 the pond toward us. As a signal that 

 we were recognized, he saluted by hump- 

 ing his back, lifting his broad tail and 

 striking the water a resounding slap, 

 thus throwing a fountain of spray high 

 into the air. His presence signified to 

 us that this marvelous piece of engin- 



44 



