1911] on Travelling at High Speeds on Surface of Earth. 125 



The maximum recorded speeds of a railway wei'e on the experi- 

 mental line of Messrs. Siemens, on the Berlin-Zossen High Speed 

 Railway, where a speed of rather more than 130 miles an hour was 

 attained. The electric current employed was 10,000 volts, 400 horse- 

 power motors being used. On the Marienfel-Zossen experimental 



Fig. 3. — Graphical Table of Maximum Speeds. 



line, the speed attained with 250 horse-power was apparently rather 

 less, though in that locomotive four motors were employed, the 

 current being, as in the other case, 10,000 volts. The lantern dia- 

 grams are a picture of the vehicles actually employed, and of the 

 track on which the experiments were made. As a set-off against the 



