I WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. ESTABLISHED 1845. A YEAR. WEIDETAY. Fig. 1Northern or Middlesex Entrance. Fig. 2The Two Upper Floors of the Shield. Fig. SView at the Rear of Shield During the Driving of the Tunnel Showing Cast Iron Lining and the Hydraulic Erectors, scientific american, 1900-04-07

---

I WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. ESTABLISHED 1845. A YEAR. WEIDETAY. Fig. 1Northern or Middlesex Entrance. Fig. 2The Two Upper Floors of the Shield. Fig. SView at the Rear of Shield During the Driving of the Tunnel Showing Cast Iron Lining and the Hydraulic Erectors, scientific american, 1900-04-07

---

Size: 3426px × 4607px
Location:
Photo credit: © Corantos / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1845, 1900-04-07, 1northern, 2the, american, analysis, art, broadsheet, cast, chemistry, developments, discovery, driving, education, entrance, erectors, established, experiment, fig, floors, health, hydraulic, information, innovation, insights, inventions, inventor, iron, journal, lab, lining, magazine, manufactures, mechanics, middlesex, mind, practical, publication, rear, research, , sa, sciam, science, sciences, scientific, scientist, shield, showing, sustainability, sview, tech, technology, tunnel, upper, weekly, weidetay, year