76 Hature'0 flMractes. 



York and Chicago, the writer made obser- 

 vations twice a day for some time of the tem- 

 perature and direction of the earth-current. 

 The first two wires constructed gave only two 

 ohms resistance to the mile, which facilitated 

 the experiments. I found that in almost every 

 instance the current flowed from the point of 

 higher temperature to the lower. If the tem- 

 perature in New York were higher at the time 

 of observations than in Chicago the current 

 would flow westward, and if the conditions 

 were reversed the current would be reversed 

 also. 



