Page 150: Since the roof arch rests for some time ... changed to Since the roof arch rests are for some time ...; as shown by Fig. 66 changed to as shown by Fig. 72
Page 172: illustrated in Fig. 12 changed to illustrated in Fig. 11
Page 175: page 127 changed to page 123
Page 179: as at b, Fig. 90 changed to as at b, Fig. 97
Page 204: The third type of section is shown by Fig. 116 changed to The third type of section is shown by Fig. 117
Page 218: Malinö changed to Malmö
Page 261: Fig. 118 shows the hydraulic jacks changed to Fig. 136 shows the hydraulic jacks
Page 282: shown by Fig. 119 changed to shown by Fig. 141
Page 297: towed down to the tunnel side changed to towed down to the tunnel site
Page 315: shown in Figs. 141 and 142 changed to shown in Figs. 159 and 160