678 CORPORATIONS. [ART. 23

Baltimore and any station located on its main line in this State, or on
its Green Spring Valley Branch, shall stop at Calvert Station, in said
city, for a sufficient length of time to take on and discharge passengers
from such trains with safety; provided, said trains be not express
trains, but passenger trains, scheduled to regularly stop on signal or
otherwise at local stations on either the main line or Green Spring
Valley Branch of said railroad within this State, and the same penalties
shall be incurred for any violation of this section as provided in section
321 of article 23 of the annotated code of the public civil laws.

1904, art. 23, sec. 300. 1902, ch. 615.

321. Any manager, officer, agent, conductor or employe who shall
violate any of the provisions of sections 317-319 shall be guilty of a
misdemeanor, and upon indictment and conviction thereof shall be
fined not less than one hundred dollars nor more than five hundred
dollars for each offense, one-half of said fine to go to the informer.

1906, ch. 717. 1908, ch. 154.

322. Every railroad company of this State heretofore or hereafter
incorporated may, in its discretion, and from time to time, make use
of electricity as a motive power on the whole or on any part or parts
of its road, in any form, to be used or applied by storage battery or
trolley wire for the purpose of operating its road or any part or parts
thereof, or for the movement of all or any of its cars or trains, and
either exclusively or concurrently with steam or with any other motive
power or system; provided, however, that every railroad company chang-
ing its motive power in whole or in part from steam to electricity shall
continue to be subject to all the provisions of the laws of this State
relating to the taxation of railroad companies whose roads are worked
by steam power, to all intents as if no such change of motive power had
been made.

1906, ch. 454.

323. It shall be unlawful for any person, corporation or associa-
tion operating a railroad within this State to permit any telegraph or
telephone operator who spaces trains, by the use of the telegraph or
telephone, under what is known and termed "block system" (defined
as follows) : Reporting trains to another office or offices, and to the
train despatcher registering the same and operating one or more train
order signals, and telegraph or telephone lever-men who manipulate
interlocking machines in railroad yards or on main tracks out on the
lines connecting side tracks or switches or train despatchers in its
services; whose duties substantially as hereinbefore set forth pertain to
the movement of cars, engines or trains on its railroad by the use of
the telegraph or telephone in despatching or reporting trains or receiv-
ing or transmitting train orders as interpreted in this section, to be on
duty for more than eight hours in any twenty-four consecutive hours.