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drainage from the runways at the Power House is discharged 
through a porous tile system into the underlying gravel at a 
point 3 feet south of the northern retaining wall of the build- 
ing. 
During the autumn the porous tile drainage system begun 
last year north of the Bleecker street entrance on the eastern 
side of the Park was continued for several hundred feet, tem- 
porarily outflowing on the surface. 
A system of 6-inch porous drain-pipe was also laid from a 
piece of swampy woods south of the nurseries to the east line 
of the Park, satisfactorily draining that part of the ground. 
Waiter Supply. The Herbaceous Grounds were supplied 
with water in the spring by laying about goo feet of 2-inch 
and I-inch galvanized iron pipe from the branch provided 
last year in the pipe which supplies the Lorillard mansion. 
As these grounds only need water about four months in the 
year, this pipe was laid only about a foot beneath the surface 
and valves were supplied for shutting it off and draining it at 
will; hose taps were provided every 50 feet along its entire 
length. This water supply proved very useful during the 
extremely dry summer. 
In August, during the building of the plaza facing the rail- 
road station, all water pipes needed there were laid so as to 
avoid the tearing up of the road in the future, this policy 
having been adopted so far asit has been possible through- 
out the prosecution of the work of construction. 
In September excavations were begun for the laying of 
about 4,000 feet of iron water pipe to connect the Power 
House and the Range of Horticultural Houses with the sys- 
tem begun last year by connecting the Museum building with 
the 36-inch aqueduct which passes through the Park. This 
work was prosecuted continuously and was finally completed 
toward the end of December; careful attention was paid to 
the grades, and fire-hydrants were placed on the two high 
points, one along the driveway just east of the Museum build- 
ing and the other nearly in front of the eastern green house; 
these pipes were tested under high pressure before being 
covered. 
