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£-00 600 800 



> * /<?/ 7S PER CM. 



Table II. 



1000 



1200 



Carbon dioxide. 



1 

 Press. 5 mm. 



Press. 2-3 mm. 



Press. 1 i)i 



m. 



Field 



Neg. 



Pos. 



Field 



Neg. 



Pos. 



Field 



Neg. 



Pos. 



per cm. 



current. 



current. 

 ... 



per cm. 



current. 



current. 



per cm. 



current. 



current. 



800 



20 



640 



15 





480 



5 



840 



24 





720 



42 





520 



6 





880 



37 





800 



145 





560 



9 





920 



-18 





880 



182 





600 



11 





960 



51 





920 



248 





640 



16 





1000 



73 



... 



960 



366 



4 



680 



23 





1040 



103 





1000 



519 





720 



32 





1080 



158 





1040 



738 





760 



51 





1120 



244 



... 



1080 



1152 





800 



74 





1160 



370 





1120 



1692 



9 



840 



113 





1200 



579 



11 



1160 



2673 





880 



164 



1 



1240 



948 



... 



1200 



4158 





920 



274 





1280 



1470 



14 



1240 



6615 



20 



960 



466 





1320 



2376 





1280 



12150 



27 



1000 



654 





1360 



3672 



18 



1300 



L 



36 



1040 



L092 



6 



1400 



5886 



22 



1316 





60 



10S0 



L686 



12 



1440 



9882 



125 



1320 





I, 



1120 



3003 





1460 



L 



L 









1160 

 1140 

 1152 



L0857 



ISO 



L6 



