n no longer be taken by sur- carries a cribwork forty- prise in any difficulty." four feet high, heavily At the bottom of our illustration is a sectional weighted with brick to drawing of the river and its bed, showing the counteract the air pressure line of the tunnel and the progress made; also m… … > 1882 SCIENTIFIC AMERICAN, INC
Patented · Iron · Boilers · Patents · Improved · Boiler · Scientific American · Consists · Keystone rolling · Hudson river · Stand pipe · Malleable iron · Wrought iron · Large number · Price lists · Steam boilers · Horse power
Internet Archive · Public domain (published before 1931). Free to use for anything.
