208 Prof. Townsend on the Conductivity produced in 



Table I. Table II. 



Pressure 4*13 millims. Pressure 2 12 millims. 



X. 



1=2. 



1=1. 



l-b. 



Calcu- 

 lated. 



120 



•13 







•135 



160 



•28 



•30 





•31 



200 



•50 



•51 







240 





•99 





•95 



320 





21 



22 



1-95 



400 





3-6 



36 





480 







53 



5-0 



560 







71 





640 







8-9 



8-7 



X. 



80 



1=2. 



Z=l. 



l=-b. 



Calcu- 

 lated. 



•13 







•14 



120 



•42 



•40 





•44 



160 



•90 



•90 





•91 



200 





T60 







240 





2-35 



2-35 



2-4 



320 





4-1 



4-0 



42 



400 







60 





480 







7-8 



8-0 



5«0 







9-4 





640 







10-8 



11-3 



Table III. 

 Pressure 1*10 millim. 



Table IV. 

 Pressure *385 millim. 



X. 



80 



1=2. 



1=1. 



l=-5. 



Calcu- 

 lated. 



•45 







•44 



120 



1-11 



ir,9 





1-20 



160 



2-02 



1-98 





205 



200 





2-8 . 







240 





3-7 



40 



4-0 



320 





54 



5-5 



5-7 



400 







6-8 





480 







80 



8-5 



560 







93 





640 







10-6 



105 



X. 



1=2. 



1=1. 



l=-h. 



Calcu- 

 lated. 



40 



•34 







•35 



80 



1-3 







1-3 



120 



20 







21 



160 



2-8 



29 



2-9 



2-8 



LOO 





3-4 



34 





240 





3-8 



3-8 



3-9 



320 







45 



4-5 



400 







50 





480 







5-4 



5-3 



560 







5-8 





640 





... 



62 



5-8 



Table V. 

 Pressure '171 mi 



lm. 



X. 



1=2. 



1=1. 



l=-b. 



Calcu- 

 lated. 



20 



•24 









40 



•65 







-m 



80 



1-35 



1-36 





1-37 



120 



1-8 









160 



225 



21 



21 



21 



240 





245 





2-4 



320 





2-65 



2-7 



26 



480 







315 



2-8 



640 







325 



3-0 



The numbers in the fifth columns of these tables 

 calculated by the method explained in Section 7. 



were 



