(83 ) 
Numerous other small areas have also been graded, sodded 
and sown during the season. 
Drainage and Sewerage 
The drain in course of construction, mentioned in my re- 
port for 1903, from the cellar of the museum to the upper 
lake, was completed in April; its total length is 519 feet, 
requiring 235 feet of 8-inch pipe to a manhole, and 284 feet 
of 6-inch pipe up to the cellar. The average depth of the 
cut was about 14 feet; about 150 feet of the cut had to be 
made through solid rock and about 375 cubic yards of stone 
was excavated in accomplishing the work; at the museum 
building the pipe is 3 feet under the floor of the cellar. 
A sewer 500 feet in length, 400 feet of 8-inch pipe and 
100 feet of 6-inch pipe, with a catch-basin, was built to con- 
nect the drainage of the stables to the main sewer, north of 
the driveway. 
Ground was broken on January 16 for the construction 
of two public comfort stations near and under the approach 
to the elevated railroad station, by contract, and a sewer was 
laid to drain them connecting with the 24-inch drain 80 feet 
south of the power house; this consists of 446 feet of 8-inch 
pipe and 148 feet of 6-inch pipe. The stations were put in 
commission on the ist of July. 
A pipe drain 38 feet in length, of 8-inch pipe, connecting 
with the old stone culvert near the west end of the upper 
lake, was constructed during road-building at this point. 
A 6-inch drain pipe about 100 feet further north, at the low- 
est point of the road, 64 feet in length, was laid to the lake 
to drain two basins to be built between the path and the road 
east of the path near the railroad. 
A 12-inch drain pipe connecting with the 12-inch drain 
laid two years ago east of the Bronx River, was constructed ; 
its length is 380 feet, running parallel with the new road 
from the eastern end of the long bridge now in process of 
construction. 
The grading of different areas made it necessary to build 
