. The Street railway journal . 790 STREET RAILWAY JOURNAL. [Vol. XXL No. entirely open, so that tlie water will freely flow into the head-race without stowing; at low water the head-race-level, bymeans of sluices, is constantly kept at the high-water mark, thewater passing through two openings into the first tunnel, thenceinto the head-race. The latter is built partly of masonry andpartly through rock as a tunnel. Its total length is 16,200 ft.,and it has an average fall of i in 1000. The first gravel sluice is situated at a distance of 3000 the mouth of the first tunnel, the seco
. The Street railway journal . 790 STREET RAILWAY JOURNAL. [Vol. XXL No. entirely open, so that tlie water will freely flow into the head-race without stowing; at low water the head-race-level, bymeans of sluices, is constantly kept at the high-water mark, thewater passing through two openings into the first tunnel, thenceinto the head-race. The latter is built partly of masonry andpartly through rock as a tunnel. Its total length is 16,200 ft.,and it has an average fall of i in 1000. The first gravel sluice is situated at a distance of 3000 the mouth of the first tunnel, the second between the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
