. Electric railway journal . ntly ofthe other units. In the early part of 1904 the requirements of the system hadbecome such that additional power was necessary, the in-creased demand being chiefly for 600-volt direct current forthe operation of cars in the congested section of the the dependability of the steam turbine had by thistime been pretty well established, this was only in connectionwith alternating-current generators. As the Commerce Streetstation was a favorable point from which to distribute directcurrent it was decided on this account to add four additionalengine uni
. Electric railway journal . ntly ofthe other units. In the early part of 1904 the requirements of the system hadbecome such that additional power was necessary, the in-creased demand being chiefly for 600-volt direct current forthe operation of cars in the congested section of the the dependability of the steam turbine had by thistime been pretty well established, this was only in connectionwith alternating-current generators. As the Commerce Streetstation was a favorable point from which to distribute directcurrent it was decided on this account to add four additionalengine units (32 in. and 68 in. x 60 in.) of the same type as be-fore, driving 2000-kw, 600-volt direct-current with this extension there was an increased re-quirement for 60-cycle alternating current for lighting andpower purposes. As space was available under the switchboard gallery, two1000-kw vertical Curtis turbines driving 6o-cycIe, 2300-voltGeneral Electric generators were installed. In connection with. Milwaukee Power Station—Plan Showing Location of New Relation to Location of Old attention of engineers. The plant was therefore originally de-signed with the idea of being only temporary to tide the sys-tem over such a period as might be required to determine thesuitability from various points of view of the steam turbinefor large power-plant work. Later, as the plans progressed,it was decided to make this plant of a substantial character,so that it might be permanent and be held as a reserve incase a large turbine plant was built which would supersede itfor regular operation. Under these conditions four vertical,cross-compound Allis-Chalmers engines (28 in. and 60 in. x 48in.) were installed, direct-connected to 1500-kw, 13,200-volt,25-cycIe General Electric generators. Each engine receivedsteam from two Edge Moor boilers, having a combined heatingsurface of 13,000 sq. ft. The plant was built on the unit plan so far as possible, eachpair of boilers hav
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