Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 337
ain shouldbreak in two withoutthe engineers knowingit — of course that couldhappen only with afreight-train — and he Why, no, said Holly; I think we might should run by a tower, and then the operatorhave got to that, but the flagman had to go should telegraph back that the train hadaway, and Jack… … THE RED BLOCK — DANGER SIGNAL. HOLLY AND THE RAILROAD SIGNALS. 325 speak of that, and I am afraid I do not quiteunderstand. Then we will try again, said Mr. Holwor-thy. You were just saying that with theblock system, when a train passed a signal-sta-tion, the operator there kept the danger-signalup…
Children's literature
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