of Jflasaaclnisdte. State Boards? Health, BOSTON, August, 1877. Dear Sir : The State Board of Health have been for three years investigating the subject of pollution of streams, disposal of sewage, etc., and are now required, by Chap. 56 of the Resolves of 1877, to report to the next Legislature a draft of a bill on this subject. We desire to get information from as many manufacturers as possible in the State and hope that you will reply, at your earliest possible convenience, to the following questions : i. Name, address, and kind of manufacturing done by you. 2. Are you at all troubled—and if so, in what way—by contamination of the stream above your mills ? 3. What kind of mills, in your opinion, most pollute the streams ? 4. Do you think that any means—and if so, what (settling-tanks, basins, filters, sewage, irrigation, etc.)— are practicable for preventing this pollution ? In behalf of the State Board of Health, Very respectfully yours, CHAS. F. FOLSOM, M. D., Secretary.