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THE POPULAR SCIENCE MONTHLY. 



and the sixteenth wells are each eighteen metres deep, while the 

 sixth, at the summit of the hill, is sixty-six metres deep. 



Sauvage concluded that the tunnel had been left unfinished, 

 which later examinations have fully proved. The fact that the 

 first and second wells contain water indicates that it had been 

 completed on the lake side for at least five hundred metres. The 

 exploration in 1882 of the thirteenth well, whose orifice is at an 

 elevation of 107'G8 metres, discovered, at a depth of 28'35 metres, 

 a horizontal gallery, 1'60 metre wide and 1*65 metre in the axis, 



OUTLET OF KATABOTHRA OF BYNIA. 



cut in each direction about six metres. At 2' 15 metres below this 

 was found a second gallery of the same section, cut in the same 

 direction, and the shaft was excavated 270 metres farther down, 

 probably for use as a drainage well, ending in a level bottom, its 

 total depth being 36'50 metres. The fourteenth, fifteenth, and six- 

 teenth wells, at decreasing altitudes, show a similar interior dispo- 

 sition, save that in the fourteenth the gallery has been but slightly 

 advanced and there is no drainage well. In the fifteenth shaft, 

 which has a total depth of 78*93 metres, the upper gallery is cut 

 to a depth of five metres on the west and two metres on the east, 

 and the lower one 10'30 metres on the west and 10'70 on the east, 

 while the well is 4*70 metres deep. In the sixteenth well th,e up- 



