Footnotes

[1.] Presented at the meeting of April 6th, 1910.

[2.] Plate VIII of the paper by Mr. Jacobs.

[3.] Plate VIII in the paper by Mr. Jacobs.

[4.] Of the paper by Mr. Jacobs.

[List of Illustrations]

(added by transcriber)

Plates are numbered continuously through the volume; Figures are numbered from 1 within each article.

Some illustrations have been repositioned to avoid breaking up the text. Page numbers in the table refer to the original printed volume. Plates were unpaginated; numbers such as “85” or “129” mean “facing page 84“, “facing page 128”. When a Figure took up a full (numbered) page, its page number is shown in italics. They may be slightly out of sequence with nearby page numbers.

PlatePage
[ XXI.]Hackensack Portal, Bergen Hill Tunnels; Method of Using Cross-Section Rod; and Belt Conveyor for Handling and Placing Concrete85
[ XXII.]Scaffold Car; Headhouse; and Round Holes in Concrete Forms87
[ XXIII.]Record of Drilling, Air Pressure, Mucking, etc., in Bergen Hill Tunnels95
[ XXIV.]Belt Conveyor for Handling and Placing Concrete; Water-Proofing, Portion of Completed Sand-Wall, etc.; and Methods of Placing Concrete in Forms and Bench-Walls119
[ XXV.]Telephone and Telegraph Ducts and Mandrels; Tunnel Lining Forms; Placing Water-Proofing; and Section of Completed Lining129
[ XXVI.]Form of Circuit-Breaker Chamber and Traveling Gantry; Forms for Storage Chamber; Rock Packing Over Arches; Method of Water-Proofing in Timbered Tunnels, etc.137
[ XXVII.]Method of Placing Water-Proofing and Keying Arch; View of Completed Tunnel; General View of Completed Hackensack Tunnel and Arches Through Cut-and-Cover Section; and View of Hackensack Approach145
[Fig. 1.] Drilling Method No. 1 88
[2.] Drilling Method No. 2 89
[3.] Drilling Method No. 3 90
[4.] Drilling Method No. 4 91
[5.]Muck Car Used at Weehawken Shaft92
[6.] Progress Profiles of North and South Tunnels Showing Monthly Excavation 93
[7.] Method of Emptying Dump Cars at Weehawken Shaft 98
[8.]Ventilation System (no caption)101
[9.] Progress Profile—North Tunnel 107
[10.] Sketch Showing Division of Lining for Purposes of Construction, and Names of Sections 115
[11.] A Cross-Section of Hains Mixer Installation, at Weehawken Shaft B Cross-Section of Hains Mixer Installation, Stone and Sand Bins Above and Screen of Crusher, at Hackensack Portal 118
[12.] Details of Traveling Gantry Used in the Construction of the Tunnel Lining 121
[13.] Plan Showing Various Methods of Building Floor and Foundation, and Details of Forms 125
[14.] Traveling Form for Building Sand-Wall 128
[15.] Electrical Conduits: Methods of Laying, Rodding, etc. 131
[16.] Details of Traveling Forms Used in the Construction of the Bench Walls 131
[17.] Sketch Showing Method of Making Arch Closure 141
[18.] Various Types of Arches, and Water-Proofing Used 143
[19.] Bergen Hills Tunnels. Hackensack Portal and Approach. Sections and Elevations. 148
[20.] Organization of Staff of Resident Engineer. Organization Previous to the Holing Through of the Tunnels. 150
[21.] Organization of Staff of Resident Engineer. Organization After the Tunnels Had Been Holed Through. 151