basement. The rear wall of the church formed the north wall of the
ash-pit, and the south wall and the ends were built of concrete. The
boilers were set with the fire-doors toward the rear wall of the
building, and 7 ft. distant from it, and above this fire-room and the
boilers there was erected a coal-bin of 500 tons capacity. The rear wall
of the compressor-house formed the north wall of the bin, the section
of which was an isosceles right-angled triangle. Coal was delivered by
dumping wagons into a large vault constructed under the sidewalk on 34th
Street, and was taken from there to the bin by a belt conveyor.

The plant for the second period was as follows:

_1._--_Central Plant._

(_a_).--_Power-Generating Plant._--The plant in the engine-room
consisted of:

Three Rand straight-line compressors from the original power plant at
Ninth Avenue and 32d Street.

One Ingersoll straight-line compressor from the old power-house.

One Rand duplex Corliss, 40 by 48-in. air-compressor, with both air
and steam cylinders cross-compounded, and a capacity of 5,600 cu.
ft. of free air per min. compressed to 80 lb. at 70 rev. per min.

Three Rand duplex, 30 by 30-in., compressors, connected with 525-h.p.,
6,600-volt, General Electric motors, with a capacity of 3,000 cu.
ft. of free air per min. compressed to 80 lb. at 125 rev. per min.

Two 10 by 6 by 10-in. Worthington steam plunger pumps.

One 71/2-h.p. General Electric motor for driving the Robbins belt coal
conveyor.

One forced-draft fan (built by the Buffalo Forge and Blower Company),
driven by an 8 by 10-in. Buffalo engine.

In the boiler-room there were three 500-h.p. Sterling water-tube
boilers.

(_b_).--Repair Shops.--The repair shops remained in their old location
until sufficient room had been excavated to sub-grade in the lot east
of Eighth Avenue, and then they were moved to the old Ninth Avenue
power-house which had been erected at that point. The contents of the
blacksmith shop remained the same as for the first period. The equipment
of the machine shop was increased by one 18-ton trip-hammer operated by
air and one bolt-cutting machine, size 1 in. to 11/2 in. The carpenter
shop remained the same except that the electric motor was replaced by a
25-h.p. single-cylinder air motor; there was added to the repair shop a
drill shop containing: Four forges with compressed air blowers, four
anvils, two Ajax 20-ft. dri