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                              BAD DRAINS;
                                  AND
                           HOW TO TEST THEM:
                                  WITH
 NOTES ON THE VENTILATION OF SEWERS, DRAINS, AND SANITARY FITTINGS, AND
            THE ORIGIN AND TRANSMISSION OF ZYMOTIC DISEASE.


                                   BY

                           R. HARRIS REEVES.

[Illustration]

                 E. & F. N. SPON, 125, STRAND, LONDON.

                      NEW YORK: 35, MURRAY STREET.

                                 1885.




                             INTRODUCTION.


The impetus given to improvements in sanitary matters by the conferences
held during last year at the Health Exhibition, as well as the desire
shown by engineers and others to improve the sanitar