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the system practically a perfect regulation in the distribution of the current. This system stands to-day representing one of the most complete and perfect examples of work of this class. The largest problems that we know of in underground work are the proposed new extension of the Edison Company in New York, and the underground system of feeders proposed to be installed for the West End Railway, of Boston. The copper alone for the latter amounts to over $l,000,000; and this question of the cost of the copper calls my attention to a fact which I desire to notice, that much of tills question of bugbear on copper is uncalled for when we are considering the underground system. The entire copper used on the system in Brooklyn is less than one-fifth of the cost of the underground system first installed.
I do not desire to claim that the ideas for the class of work here represented and described hold or represent all the perfection to be obtained in central station work.
