River Lune Bridge (built as rail but now carries a road), Lune Millennium Bridge (pedestrian and cycle) and Carlisle Bridge (carrying the West Coast Main Line railway, and with a public walkway on the eastern side) which is the furthest downstream of the bridges. This part of the Lune is also the site of the old Port of Lancaster, probably a port from Roman times; the Lancaster Port Commission was established in 1750 to improve navigation on the estuary. Between 1750 and 1767, St George's Quay and New Quay were built in Lancaster and in 1779 the port facilities were extended closer
Lune of Hippocrates circle. He proved that the lune bounded by the arcs labeled "E" and "F" in the figure has the same area as triangle "ABO". This afforded some hope of solving the circle-squaring problem, since the lune is bounded only by arcs of circles. Heath concludes that, in proving his result, Hippocrates was also the first to prove that the area of a circle is proportional to the square of its diameter. Hippocrates' book on geometry in which this result appears, "Elements", has been lost, but may have formed the model for Euclid's "Elements". Hippocrates' proof was preserved through the "History