VIEW OP BEAR-TRAP WEIR, DAM No. 6, OHIO RIVER (1901). 



The bear-trap is raised in position and seen from the down-stream side. 

 The bottom sheathing planks are yet to be put on. 



VIEW OP A-FRAME WEIR, DAM No. 6, OHIO RIVER (1901), SHOWING 

 THE METHOD OF RAISING OR LOWERING THE FRAMES. 



(From sill to pool is 13 feet 2 inches.) 



(To fact p. 157.) 



