Plate XXIX. 



Fig. 1. — Perspective View of Pike's Fisbway. 



Fig-. 2. — Gronii(l-|»lan of Pike's Fishway. 



Scale, 1 ^01=% iucli. ^^^^ ^.f oam. 



Arrows show the direction of the current: .1. beginning of circuit. li. end of circuit. 



rf, .?, d. Outside walls: /. Partition walls: r, i; itv. Steps, .3 inches each, the floor between the steps "being level. 



When the waterreaches B, it has accomplished a distance of T.i feet, and has fallen 39 inches. 



113- another step of 3 inches it j.asses uiuKt .1 and begins a new circuit. 



