ART. 23] COMMON CASHIERS. 729

Unless the commission otherwise orders, no change shall be made in
any rate, fare or charge, or joint rate, fare or charge, which shall have
been filed and published by a common carrier in compliance with the
requirements of this sub-title, except after .thirty days' notice to the
commission and publication for thirty days, as required by section 437,
which shall plainly state the changes proposed to be made in the
schedule then in force, and the time when the changed rate, fare or
charge will go into effect; and all proposed changes shall be shown
by printing, filing and publishing new schedules, or shall be plainly
indicated upon the schedules in force at the time and kept open to
public inspection. The commission, for good cause shown, may allow
changes in rates without requiring the thirty days' notice and publica-
tion herein provided for, by duly filing and publishing in such manner
as it may direct, an order specifying the change so made and the time
when it shall take effect; all such changes shall be immediately indi-
cated upon its schedules by the common carrier.

The names of the several carriers which are parties to any joint
tariff shall be specified therein, and each of the parties thereto, other
than the one filing the same, shall file with commission such evidence
of concurrence therein or acceptance thereof as may be required or
approved by the commission, and where such evidence of concurrence
or acceptance is filed, it shall not he necessary for the carriers filing
the same to also file copies of the tariffs in which they are named as
parties.

Every common carrier shall file with the commission sworn copies
of every contract, agreement or arrangement with any other common
carrier or common carriers relating in any way to the transportation
of passengers, property or freight.

See sections 275, 327, 336, 435 and 441.

1910, ch. 180, sec. 16 (p. 358).

428. No common carrier shall, directly or indirectly, by any spe-
cial rate, rebate, drawback or other device or method, charge, demand,
collect or receive from any person or corporation a greater or less
compensation for any service rendered or to be rendered in the trans-
portation of passengers, freight or property, except as authorized in
this sub-title, than it charges, demands, collects or receives from any
other person or corporation for doing a like and contemporaneous serv-
ice in the transportation of a like kind of traffic under the same or sub-
stantially similar circumstances and conditions.

No common carrier shall make or give any undue or unreaanable
preference or advantage to any person or corporation, or to any locality,
or to any particular description of traffic in any respect whatsoever, or
subject any particular person or corporation, or locality, or any par-
ticular description of traffic to any prejudice or disadvantage in any
respect whatsoever.

No common carrier subject to the provisions of this sub-title shall
after the first day of November, one thousand nine hundred and ten,