798 Mr. G. W. Todd on the Mobility of Positive Tons 



The results o£ the experiments with carefully dried gases 

 are given in the following tables. Those marked * were 

 obtained with the commutator. 



Air. 



C0 9 . 



Pressure. 



Mobility. 



Product. 



8-8 mm. 



113 



99 



6-00 



170 



102 



4-38 



23 L 



101 



3-02 



334 



101 



3 120 



876 



105 



1-13 



918 



104 



•875 



1715 



150 



•600 



3830 



230 



•572 



4220 



242 



* -540 



6810 



368 



•452 



7520 



340 



* -360 



10800 



389 



* -200 



17500 



350 



* -155 



30200 



467 



* -150 



47600 



714 



* -120 



74100 



890 



* -120 



68600 



822 



* -115 



67800 



780 



SO,. 



Pressure. 



Mobility. 



Product. 



324 mm.' 



138 



44-6 : 



2-71 



157 



42-4 



1-96 



219 



430 



1-20 



357 



42-8 



102 



440 



44-9 



•820 



487 



39-9 



•675 



621 



42-0 



•562 



781 



44-0 



•428 



1094 



4(r9 



•408 



1540 



631 



•320 



2450 



78-3 



•280 



4005 



110-2 



•262 



5720 



150 



Pressure. 



Mobility. 



Product. 



545 mm. 



146 



74-7 



2-43 



319 



773 



1-30 



651 



84-6 



•99 



895 



88-8 



•750 



1280 



96-5 



•600 



2640 



158 



•482 



4190 



203 



* -410 



5060 



207 



•393 



6590 



258 



* -235 



9810 



231 



* -190 



27200 



515 



* -145 



25600 



371 



* -120 



51800 



621 



* -103 



71900 



741 



CH 4 . 



Pressure. 



Mobility. 



Product. 



4-31 mm. 



326 



141 



3-60 



384 



138 



2-78 



524 



146 



2-20 



709 



156 



1-80 



900 



162 



1-55 



1310 



232 



1-25 . 



2470 



310 



•975 



3980 



388 



•820 



5710 



471 



H 5 



Pressure. 



Mobility. 



Product. 



12-2 mm. 



330 



403 



9-80 



449 



440 



8-35 



729 



605 



7-05 



978 



690 



6-10 



1970 



1200 



4-65 



3480 



1620 



*l-63 



14100 



2300 



*l-25 



19200 



2400 



* -860 



21800 



1890 



* -700 



29100 



2040 



* -540 



43700 



2360 



* -450 



45200 



2030 



* -400 



I 



86700? 



3470? 



