ant for lazi- ciple of construction ness. No man would adopted therein, and think of working the great number of only eight or ten these bridges which : hours if he were la- are in use (we are told - boring for himself, 700 have been built :and the great error since 1860)shows that - of our entire… … Each arch has two capable of working chords with a sec- twelve hours at se- tion of six inches by vere manual toil. Why should he not be permitted to do so drawbridge, which they claim is one of the stiffest and strong- three fourths of an inch. The arches are of boiler plate and to draw a…
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