The conditions upon which the patentees for making salt or brackish water fresh and wholsom, do intend to conclude with such persons that shall please to agree with them for the use of this invention either by sea or land.

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Water - Purification - Early works to 1800

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The conditions upon which the patentees for making salt or brackish water fresh and wholsom, do intend to conclude with such persons that shall please to agree with them for the use of this invention either by sea or land.