Figure 4>- Location of Hudson Rum; hwn. {Leslies Weekly, 1879.) 



alienated by Haskin in the course of work and at le.ist 

 one withdrew. Haskin's remarks in liis own defense 

 indicate that some of the denunciation was undoubt- 

 edly justified. And yet, despite this reaction, the 

 fundamental merit of the pneumatic tunneling method 

 had been demonstrated by Haskin and was immedi- 

 ately recognized and freely acknowledged. It was 

 apparent at the same time, however, that air by itself 

 did not provide a sufliciently reliable support for 



large-area tunnel works in unstable ground, and this 

 remains the only major subaqueous tunnel work 

 driven with air alone. 



Alter the accident, work continued under Haskin 

 until 1882 when funds ran out. About 1600 feet of 

 the north tube and 600 feet of the south tube had been 

 completed. Greathead resumed operations with a 



shield for a British c pan) in 1889, but exhaustion 



oi funds again caused stoppage in 1891. The tunnel 



PAPER 41: rUNNEl I Nt, INHERING — A MUSEUM I HI \ I MINI 



235 



