However, it was from the second tube across the Channel and the tube connecting Montreal to New York, as well as the one connecting New York and Chicago, that they obtained some of their then radical ideas concerning the use of wind power for propulsion. Therefore, before the Undersea Tube had been completed, the engineers in charge had decided to make use of the new method in the world's longest tunnel, and upon that decision work was immediately commenced upon the blue-prints for the great air pumps that were to rise at the two ends—Liverpool and New York. However, I will touch upon the theory of wind-propulsion later and after the manner in which it was explained to me.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "However, it was from the second tube across the Channel and the tube connecting Montreal to New York, as well as the one connecting New York and Chicago, that they obtained some of their then radical ideas concerning the use of wind power for propulsion. Therefore, before the Undersea Tube had been completed, the engineers in charge had decided to make use of the new method in the world's longest tunnel, and upon that decision work was immediately commenced upon the blue-prints for the great air pumps that were to rise at the two ends—Liverpool and New York. However, I will touch upon the theory of wind-propulsion later and after the manner in which it was explained to me." in the context of "" to mean that wisdom is timeless.