Mr. 0. J. Lodge. Experiments on | June 4. 



Kl-7-4 log 6/a, as 147 K cm. altogether, or K/26 per unit length ; 

 and their self-induction similarly, for currents which keep wholly 

 to the outer skin, as 100,009 /t centimetres, or 26 /t per unit length. 

 The electrostatic capacity of the " shorter leads " is 61 cm. 



Plan of Experiment. 



32. At the far end of these leads (either "the longer" or "the 

 shorter ") was arranged the spark micrometer, a micrometer screw 



