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be cut but a cable passed under it. I found the engineers 
of the department quite as solicitous as I was that trees 
should not be endangered, and the work was accomplished 
with the greatest care and no damage to trees is antici- 
pated; the companies contracting for the work performed 
it expeditiously and neatly, taking the sod from all trench 
excavations necessary and replacing it so that within a few 
days after the cables were laid it was difficult to detect 
their position; they have been very accurately mapped, 
however, and it is hoped that subsequent operations may 
not disturb them at any point. The entire system of 
driveways west of the Bronx River was thus supplied with 
electric lights and the current turned on in December. 
The work along the main roads east of the river is not yet 
quite completed. The posts used for electric lights are 
neat in design and were approved by the Art Commission. 
Along the road leading north from Pelham Avenue past 
the mansion, the northern part of which will revert to a 
path and the southern part will require widening, the 
electric installation is temporarily on poles, but the depart- 
ment will place these wires under ground after the roadway 
construction in progress in that part of the grounds is 
completed. 
Water Supply 
There has been no extension of the water supply system 
during the year, and only ordinary repairs to it have been 
required. 
The additional land has a water supply system on both 
sides of the river, and this, by the aid of recollection of 
employees of the Park Department, has been located on 
our general plan, probably not with very great accuracy, 
although the position of parts of it has been determined 
by excavations. The land east of the Bronx River is 
traversed by a 4-inch water pipe which extends from a 
main on the Pelham Parkway north through the rose garden 
site, past the Park Department’s stables and greenhouses, 
to the mansion, but it does not supply the mansion with 
