The following extract, showing only the kitchen, is from the description of the plumbing in the residence of Mr. H. G. Marquand, New York. Richard M. Hunt was the architect, and Alexander Orr the plumber.

The boilers A and B, Figure 131, are respectively the "Croton" and "tank" boilers shown in diagram Figure 3, page 96, issue of July 3, 1884, which diagram is illustrative of the system of piping used in the distribution of the hot and cold water.

The letters used here to indicate the parts are the same as those used in the diagram, and a comparison with it will familiarize the reader with the system and assist him to compare the disconnected parts.

The position of the kitchen is over A, cellar plan; the chimney-jambs corresponding to the position of the range shown in the cut, from which the position of the boilers and the sinks can be readily ascertained.

The "Croton" water-pipe m, 11/2 inches in diameter, is taken from the general cold system in the cellar through the floor at m, passing up and entering the boiler A at m on top. The "tank" water-pipe k, also 1 1/2inches in diameter, comes through the floor from the tank-main in the cellar, entering the boiler at the top. Between the "Croton" pipe m to the boiler A and the tank-pipe k to the boiler B is a 3/4-inch pipe, shown by dotted lines, and furnished with a stop-valve and check-valve, a'. The object of this pipe is to allow water to pass from the Croton-pipe m into the tank-pipe k, thence to the tank-boiler, should the water-supply from the tank be interrupted or should the tank be run empty. The passage of the water from the tank-pipe to the Croton-pipe is, of course, prevented by the check-valve, which only opens upward and which is kept to its seat when water is in the tank by the greater pressure. The pipe f is where the hot water leaves the Croton-tank for low distribution. Upward from the boiler it extends into a header (f), composed of i^-inch nipples and tees, from which the pipes f3 extend to the different points of distribution, such as butler's pantry, billiard-room, servants' bath, and all points in basement and first floor, and to the "cut-offs" of the different risers to the second floor. In like manner the hot-water pipe / from the tank-boiler B extends into a header, l, from which the pipes l1 either run to the fixtures on the third floor or to the "cut-offs " of the risers for the second floor. The pipe f1 is the warm "Croton" supply to the kitchen-sink, and is stopped in the pipe at the star. The pipe ml is a branch of the pipe m, and is the cold Croton water-supply to the same sink, stopping at the same star, the pipes being connected in this manner above the sink for the sake of a symmetrical appearance. In like manner the pipe f2 conveys warm water to the pantry-sink, the pipe m2 being the cold supply, the star being the dividing point, as before.

Figure 131.

The pipej is the return-circulation pipe to the Croton boiler, while l performs the same functions for the high-pressure circulation to the tank-boiler.

There are separate water-backs to each boiler, as plainly indicated in the illustration, the circulation-pipes being as shown. The pipe p, with its valves, show the "draw-off" connections of both boilers.

All the pipes shown, except the waste-pipes and air-pipes of the sinks, are seamless brass pipes, tinned, and the fittings are mostly special and of brass, the couplings being extra heavy with long threads, and all nickel-plated.

The sinks used are of white porcelain, supported in cast-brass frames, with turned legs. The slabs back of the sinks are of reddish-gray marble, against which the pipes are fastened. The arrangement of the traps and air-pipes are shown and are all plainly, though tastefully, "soiled."

Under the hood over the range is a large register opening into a flue parallel with the range-chimney flue, which latter warms it. This flue is 12"x16" in its cross-section. The hood is lined inside and out with very light-tinted tiles, as are all the walls of the kitchen. The frame and rail under the lower edge of the hood are of brass, and the arrangement for connecting the range with its chimney-flues is such as to show no pipe.

The kitchen-floor is of encaustic tiles of selected designs, the colors being neutral.