ELECTRO 



Phil. Mace- Ser. 6. Vol, 40. PI. II. 



s „TICAL BASE LINE 50 FT. LONG. 

 .^Wyce. Resistance of Circuit 50 ohms. 



<S£A sl/oht 



S\ /W^* 



*4 



Sea Slight. 



OBSEXVEa T/a£ ( /'z K/vot) 

 EST/MATE0 J7/&ECT/Q/V Q/? T/QE 



(V/lTfz/? 



/z J 



t 235 ohms 



TOM 

 B 



Start Bay. 



Observ 



isr ride ) 



ECTRODES. 



00 Yards. 



ranee, 29th July, 1918 



knot W. by S. 



! fo ] 



'ACT/CALLV A/C 



