Popular Science Monthly 



81..J 



New York's Two- Storied Subway 



While train after train. loaded with passengers ran 

 into Times Square station of the New York sub- 

 way and out again, and while millions of persons on 

 foot and in vehicles of every character passed over 

 the spot on the surface, a new, four-track subway 



to be operated by the Brooklyn Rapid Transit Co., 

 was constructed, crossing 42nd Street under the 

 tracks of the old subway. Can you realize the tre- 

 mendous difficulty of the engineering task involved 

 in the gigantic undertaking? Read how it was done. 



