PHILLIPS LEE GOLDSBOROUGH, GOVERNOR. 723

the General Assembly of Maryland of the year 1910 hereinbefore
mentioned, be, and the same is hereby repealed and re-enacted
with amendments so as to read as follows:

SEC. 3134. The Commission shall have the general supervis-
ion of all persons and gas corporations and electrical corpora-
tions and other corporations having authority under any general
or special law, or under any charter or franchise, to lay down,

erect or maintain wires, pipes, conduits, ducts or other fixtures
in, over or under the streets, highways and public places of any
municipality, for the purpose of furnishing or distributing gas,
both natural and artificial, or of furnishing, or transmitting
electricity for light, heat or power, or maintaining underground
conduits or ducts for electrical conductors.

Investigate and ascertain, from time to time, the quality of
gas supplied by persons and corporations, examine the methods
employed by such persons and corporations, in manufacturing,
selling, delivering or supplying gas or electricity for light, heat

or power, and in transmitting the same, and have power to order
such improvements as will best promote the public interests,
preserve the public health and protect those using such gas
or electricity and those employed in the manufacture and dis-
tribution thereof, or in the maintenance and operation of the
works, wires, poles, lines, conduits, ducts and systems in con-
nection therewith.

Have power by order, to fix from time to time such reasonable,
standards as it may deem proper for the measurement of the
purity of gas, and of the illuminating power of gas, and of the
heating power of gas, for lighting, heating or power purposes,
whether natural gas distributed or sold, or gas manufactured,
distributed or sold by persons or gas corporations for such
lighting, heating, or power purposes, and to prescribe from time
to time the efficiency of the electric supply spstem, of the cur-
rent supplied, and of the lamps furnished by the persons or

electrical corporations generating and selling electric current,
and by order to require said natural or other gas to equal the
standards so fixed by it, and to prescribe from time to time the
reasonable minimum and maximum pressure at which said
natural or other gas shall be delivered by said persons or gas
corporations.

For the purpose of determining whether said natural or other
gas for lighting, heating or power purposes conforms to said
standards of illuminating power, heating power, purity and
pressure, and for the purpose of determining whether the effi-
ciency of the electric supply system and the current supplied