310

HISTORY OF ENGINEERING.

Book I.

HART OP SIDE OP LOCK.

Fig. 311.

Fig. 313.

SECTION IN MIDDLE.

the quay, to within 14 inches of the top, was laid in blue lias lime mortar, and the re-mainder worked with Dorking lime.

The brickwork was flushed, and every four courses varied in their diagonal direction.Commercial Docks arc situated on the opposite side of the river to the West IndiaDocks, and nearly opposite their upper entrance. There are six docks, the largest of

SURREY CANALX^

DOCK

DOCK10 ACRES

RIVER THAMES

Fig.314.

COMMERCIAL DOCKS.