Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 427
be noticed. The course of the tunnel is shown by the cu7i.ie markedin dots, for this tunnel makes a round within the rock, and the railwayemerges to day again at a point lower down in the course of the valleythan at the entrance to the tunnel, but at a higher level. It is seen inthe figure… … ^^ -.
Inventions
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