What is conservation, as from injury, defilement, or irregular use. [An act was] passed in 1866, for vesting in the Conservators of the River Thames the conservancy of the Thames and Isis. Mozley & W called?

conservancy — Conservation, as from injury, defilement, or irregular use. [An act was] passed in 1866, for vesting in the Conservators of the River Thames the conservancy of the Thames and Isis. Mozley & W. (Webster's 1913.)

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