808 ARTICLE 23.

erating company, transportation of property or freight company, or other
public service corporation subject to any of the provisions of this sub-title,
or who owns stocks or bonds therein, or who has any pecuniary interest
therein.

Act of 1914, ch. 750, held to have been validly passed. The amendment of a bill
by striking out all after " A Bill," upheld. When a bill is properly authenticated
it cannot be impeached by the Journals alone or by oral testimony that the Con-
stitution was not observed in its passage. There must be clear and competent evi-
dence to rebut the presumption that a duly authenticated and published act has been
validly passed. When one bill is substituted for another and it appears that the
original title was printed on the back of amended bill, to invalidate the bill it must
appear that original title alone was read. Thrift v. Towers, 127 Md. 55.

The part of this section providing that a portion of the salaries of the commis-
sioners and of the general counsel shall be paid by the city of Baltimore does not
conflict with art. 15, sec. 1, of the Constitution or with art. 35 of the Declaration of
Rights or with the Federal Constitution, and is valid. Extent of the power of
the legislature over the city of Baltimore. The title of the act of 1910, ch. 180, is
sufficient under art. 3, sec. 29, of the Constitution. Thrift v. Laird, 125 Md. 57. (This
decision was based on the law as it stood prior to the act of 1914.)

An. Code, sec. 415. 1910, ch. 180, sec. 3 (p. 346).

350. The jurisdiction, supervision, powers and duties of the public
service commission herein created and established shall extend under this
sub-title:

1. To railroads and street railroads lying within this State, and to the
person or corporation owning, leasing, operating or controlling the same.

2. To street railroads, any portion of whose lines lie within any incor-
porated city or town within this State, containing not less than two thou-
sand inhabitants, and to all transportation of persons or property thereon,
and to the person or corporation owning, operating, controlling or leasing
the said street railroads.

3. To such portion of the lines of any other railroad as lie within this
State, and. to person or. corporation owning, leasing, operating or con-
trolling the same, so far as concerns the construction, maintenance, equip-
ment, terminal facilities and local transportation facilities and local
transportation of persons or property within the State.

4. To any common carrier operating or doing business within the State.

5. To the manufacture, sale or distribution of gas, natural and artificial,
and electricity for light, heat and power, within the State of Maryland, and
to the persons or corporation owning, leasing, operating or controlling the
same; and to gas and electric plants, and to persons or corporations owning,
operating, leasing or controlling the same.

6. To all telephone lines, as above defined, and all telegraph lines as
above defined, and to every telephone company, and to every telegraph
company, so far as said telephone and telegraph lines are and lie, and so far
as said telephone companies and said telegraph companies conduct and
operate such line or lines, respectively, within this State.

7. To all water companies and to the land, property, dams, water sup-
plies, canals or power stations thereof and the operation of the same within
this State.

8. To all persons, corporations or partnerships engaged in the " trans-
portation of property or freight," as above defined, within this State.