BRITISH LIBRARY / SCIENCE PHOTO LIBRARY BRITISH LIBRARY / SCIENCE PHOTO LIBRARY
Map and cross section of the drainage tunnel from the Machhodri tank to the river with elevation and cross section of the tunnelling process and drawings of the equipment used. Inscribed: 'Plan of the Mutsyoduree Tunnel. Proposed 30th April 1825. Sanctioned 2nd June 1825. Commenced masonry 1826. Completed 31 July 1827'. Pen and ink and water-colour. Illustrated by James Prinsep.
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