268 ME. E. M. WELLISCH ON THE MOBILITIES OF THE 



, , . Height of fall to b; W . 



Tern- Electric _ . , Time . Pressure. *. 



perature. field. 



C. Tolts/cm. cm. cm. sec. mm. cm./sec. cm./sec. cm./sec. 



10 38-7 54-9 47-0 0-0250 178 1-03 0-24 



77-4 50-2 0-0146 182 0-88 0-21 



38-7 51-2 0-0114 74 2-27 0-22 



0-20 



0-20 



19-3 54-8 53-0 0-0055 18 9-42 0-22 



0-21 



0-22 

 0-21 



11 13-5 54-8 50-5 0-0134 43 5-53 0-31 



0-31 

 0-24 



0-25 

 0-34 



15-5 50-3 0-0146 56 4-42 0'33 



0-34 



0-34 

 20 9-7 50-6 0-0136 32 7-58 0-32 



15-5 50-9 0-0128 48 5-04 0'32 



0-30 



10 38-7 54-9 52-4 0-0077 31 3-36 0-14 



0-15 

 19-3 54-7 49-8 0-0153 37 3-39 0-16 



0-15 

 16 54-S 49-8 0-0156 41 3-32 0-18 



0-17 

 0-18 



0-]7 

 10 54-9 49-8 0-0159 31 3-26 0-13* 



0-10* 



AT r, f positive ion 0-17 cm. /sec. 



Mean values of K-rmi ,.- n ic 



l_ negative O'lo 



In the following table is given a summary of the results obtained for the ionic 

 mobilities ; they correspond to an electric intensity of 1 volt per cm. and a pressure 

 of 760 mm. of mercury. There is appended a table containing the values of the 

 mobilities previously ascertained. 



