First-Nineteenth annual report of the Metropolitan water and sewerage board .. 1901-1919 . 0W3 000 0 00000 0000000000000 o»ocDcoc^—^ O ococo coco CO ^-c; r^co CI-^ t* t^co CO Ci CO CO COco^eooa»-»co ^cocicoi—lO*—ococo *-H^F-it-(t-HO »-H^H-^-Hi-ieO^HC»Csli-lr-*C<ld-Hd^i-»^^i-Hi-l^ C?-«S<t^O»«*CO»OTj<b»^--»Mt^C<ICO»OOa»COOO»/500t^iCC<COM C«C0Tj*O0iC000CT^-^T»«^e0C^i0CDC^C0O*-*CS«l<C^00W3-^-O ^cOCOCOC3C^OCOCOCOCOCOt^**iC^<»<CO»OiOCOCOCOCOeOrJ<^ a < noi^Tu§i no sscyj •mox ^ I 2 ° 2 2 2 ^^^^^^^^^^^^^i?^^ij^2?^—^^ M K X X X ^ sssss^ ot; . .^ > > > ©
First-Nineteenth annual report of the Metropolitan water and sewerage board .. 1901-1919 . 0W3 000 0 00000 0000000000000 o»ocDcoc^—^ O ococo coco CO ^-c; r^co CI-^ t* t^co CO Ci CO CO COco^eooa»-»co ^cocicoi—lO*—ococo *-H^F-it-(t-HO »-H^H-^-Hi-ieO^HC»Csli-lr-*C<ld-Hd^i-»^^i-Hi-l^ C?-«S<t^O»«*CO»OTj<b»^--»Mt^C<ICO»OOa»COOO»/500t^iCC<COM C«C0Tj*O0iC000CT^-^T»«^e0C^i0CDC^C0O*-*CS«l<C^00W3-^-O ^cOCOCOC3C^OCOCOCOCOCOt^**iC^<»<CO»OiOCOCOCOCOeOrJ<^ a < noi^Tu§i no sscyj •mox ^ I 2 ° 2 2 2 ^^^^^^^^^^^^^i?^^ij^2?^—^^ M K X X X ^ sssss^ ot; . .^ > > > © - t. fc- u _> o » o aJO > d o o 5 -2^- ? O C dl g S o o c5S- o o - ?-> >? o o o o o . . > > u u9 P c - . 2 o o-ri^ ^ ^ ^ ^ o o ^ — P g 2 o d od-r J2 S 2 p S o 2 5-H ^ ?- ~ ;iSxXF^^^S^<;< . —. tH tt p p ;-2 2 s ^ ^ - » © Jj oH3 , a No. 57.] AND SEWERAGE BOARD. 207 Table No. 34. — Chemical Examinations of Water from a Faucet in Boston, from 1892 to 1911. [Parts per 100,000.]. Note relating to Chemical Examinations of Water, Tables Nos. chemical examinations contained in the tables were made by theState Board of Health. Previous to the j^ear 1904 colors were deter-mined by the Nessler standard, but the corresponding values by theplatinum standard are also given, for the purpose of comparison withcolors determined in the laboratory of the Metropolitan Water andSewerage Board, as given in subsequent tables. The odor recorded istaken in such a way that it is a much stronger odor than would be no-ticed in samples drawn directly from a tap or collected directly from areservoir. The important samples are collected and examined semi-monthly or monthly. 208 METROPOLITAN \YATER [Pub. Doc. 0000 s, .i 6 o a 3 :^ £ i 0 8 O e»3 t^ W5 00 f^ »:5 [V ^ ..^ oo »d *r t^ in K > o o m O C5 CI C-. £1 e to eo t~ C^l CO U5 ? a ^ 3 ^a in ^si Z K C - f 0 1 ?^ »o ^ ^ 00 ^M ^ c ».o s CO ?.r f^ f_ o z > :c L? -r o
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