...The proviso in each act is to the same effect, and in the Railroad Retirement Act reads as follows : Provided, however, That the term "employer" shall...exclude any part of the general steam-railroad system of transportation now or hereafter operated by any other motive power. The Interstate Commerce Commission...

...agent. Roscoe M. Harding, from 1908 to 1939 ; he was a freight conductor from 1936 to February 20, 1939. That the term "employer" shall not include any street,...exclude any part of the general steam-railroad system of transportation now or hereafter operated by any other motive power. Section 1 (a) in both the Railroad...

...paragraph of section 1 thereof, which reads as follows : Provided, however, That the term "carrier" shall not include any street, interurban, or suburban...exclude any part of the general steam-railroad system of transportation now or hereafter operated by any other motive power. The Interstate Commerce Commission...

...paragraph of section 1 thereof, which reads as follows: Provided, however, That the term "carrier" shall not Include any street, interurban, or suburban...transportation, but shall not exclude any part of the general steam-rallrond system of transportation now or hereafter operated by any other motive power. The Interstate...

...Provided, hoiccver, That the term " carrier " shall not include any street, interurban, or suburlvan electric railway, unless such railway is operating...exclude any part of the general steam-railroad system of transportation now or hereafter operated by any other motive power. The Interstate Commerce Commission...

...in the possession of the business of any such "carrier": Provided, however, that the term "carrier" shall not include any street, interurban. or suburban...a general steam-railroad system of transportation, now or hereafter operating by any other motive power. The Interstate Commerce Commission is hereby...

...connections between urban centers. Under the proviso of the Act, which excludes from the term "carrier," any street, Interurban, or suburban electric railway,...general steam-railroad system of transportation," there is no reference to the physical properties of the railway. If a suburban or Interurban railway,...

...italicized, as a part of the proviso quoted next below : Provided, however, That the term "carrier" shall not Include any street, Interurban, or suburban...unless such railway Is operating as a part of a general steam-railway system of transportation, but shall not exclude any part of the general steam-railroad...

...in the possession of the business of any such 'carrier": Provided, however, That the term 'carrier* shall not include any street, interurban, or suburban...electric railway, unless such railway is operating as part of a general steam-railroad system of transportation, but shall not exclude any part of the general...

...from the word "a" preceding the word "general" in the first qualifying clause of the proviso reading "unless such railway is operating as a part of a general steam-railroad system of transportation." It is urged that the term "the general steam-railroad system of transportation" as used therein is...