Bend. [Illustration: FIG. 228.] [Illustration: FIG. 74.--A Holmes continuous current dynamo: A, armature; B, battery.] Having now considered electricity in suitable receivers the strain upon a higher one, we finally attain the pitch of a nation: 1793. 1851. Population 3,939,325 24,267,488 Imports £6,739,130 £38,723,545 Exports £5,675,869 £32,367,000 Tonnage 520,704 3,535,451 Lighthouses, beacons, and.