Produced by Juliet Sutherland, Henry Gardiner and the Online Distributed Proofreading Team at http://www.pgdp.net * * * * * Transcriber's Note: Words in italics are indicated like _this_. Subscripts are indicated like this: H_{2}O. The original publication has been replicated faithfully except as listed at the end of the text. * * * * * TABLE OF CONTENTS INTRODUCTORY. 475 THE CONCESSION. 476 GEOLOGY AND TOPOGRAPHY. 476 POPULATION, AREA, AND MORTALITY. 479 RAINFALL AND TEMPERATURE. 480 AVAILABLE SOURCES OF SUPPLY. 484 MATERIALS FOR CONCRETE. 491 ESTANZUELA SUPPLY. 494 SOUTH DISTRIBUTING RESERVOIR. 506 SAN GERONIMO GRAVITY SUPPLY. 514 DISTRIBUTING RESERVOIR AT OBISPADO. 525 COMPARISON OF SOUTH AND OBISPADO RESERVOIRS. 530 ANALYSES OF ESTANZUELA AND SAN GERONIMO WATERS. 532 CITY WATER DISTRIBUTION SYSTEM. 532 MAIN SEWERAGE SYSTEM. 539 MAIN OUTFALL SEWER. 542 SEWAGE DISPOSAL WORKS AND IRRIGATION LANDS. 545 QUALITY OF AND RATES FOR LABOR. 552 COST OF WORKS. 552 TARIFFS AND SANITARY REGULATIONS. 553 ENGINEERS, ETC. 556 DISCUSSION. 557 JAMES D. SCHUYLER. 557 DAVID T. PITKETHLY. 559 V. SAUCEDO. 563 GEORGE T. HAMMOND. 567 RUDOLF MEYER. 576 GEORGE ROBERT GRAHAM CONWAY. 580 AMERICAN SOCIETY OF CIVIL ENGINEERS INSTITUTED 1852 TRANSACTIONS Paper No. 1193 THE WATER-WORKS AND SEWERAGE OF MONTERREY, N. L., MEXICO.[1] BY GEORGE ROBERT GRAHAM CONWAY, M. AM. SOC. C. E. WITH DISCUSSION BY MESSRS. JAMES D. SCHUYLER, DAVID T. PITKETHLY, GEORGE S. BINCKLEY, VICENTE SAUCEDO, GEORGE T. HAMMOND, RUDOLF MEYER, AND GEORGE ROBERT GRAHAM CONWAY. INTRODUCTORY. [1] Presented at the meeting of February 1st, 1911.