Workmen installing prefabricated steel sections of a canal. Process print.

1900-1999

1 print : process print ; image 21 x 31.7 cm

An armour-plated canal: A ready-made bed for a water-way through the sand. 1. A section of the canal ready to be jacked into position before being packed with its earth support. 2. Within steel walls: a view along an interior section of the canal. 3. A water-course that cannot wear away its banks: one of the steel sections of the canal. 4. Where the water will flow: work in progress in the seventh section. Photographs by courtesy of the "Scientific American".

Wellcome Collection 37266i