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



T,, , . Height of fall to &7eo- 



Tern- Electric * _. Time p res sure. *. , . 



perature. field. lst point . 2 nd point. + 



C. voifcs/cm. cm. cm. sec. mm. cin./sec. cm./sec. om./ec. 



CARBON MONOXIDE. 



14 38-7 54-8 51'3 0-0108 355 2-39 1-12 



19-3 48-5 0-0198 347 2-62 1-19 



51-2 0-0112 173 4-63 1'05 



13 38-7 47-8 0-0221 759 1-17 1'17 



51-2 0-0112 361 2-31 1'09 



51-5 0-0102 361 2-53 1-20 



19-3 50-7 0-0127 201 4'08 1-08 



50-9 0-0121 201 4-28 1-13 



7-7 50-4 0-0137 93 9-48 1-16 



50-4 0-0137 93 9-48 M6 



3-9 51-5 0-0102 34 25-13 1'12 



51-0 0-0118 36 21-72 1'03 



T,, e , f positive ion 1-10 cm./sec. 



Meanvaluesof ^( negative M4 



CARBON DIOXIDE. 



15 77-4 55-0 50-2 0-0149 754 0-87 0-86 



50-0 0-0156 754 0'83 0-82 



38-7 54-8 52-2 0-0080 200 3-23 0'85 



52-1 0-0083 200 3-11 0'82 



77-4 49-8 0-0156 760 0'83 0-83 



49-5 0-0166 760 0'78 0'78 



17-4 53-2 0-0049 60 11-73 0'93* 



53-0 0-0055 60 10-45 0'82* 



,., c , f positive ion 0-81 cm./sec. 



Mean values of fenn"! * n o- 



u \negative 0'8o 



NITROUS OXIDE. 



15 77-4 55-0 50-4 0-0143 754 0'90 0'90 



0'86 



0'89 



0'83 



0-91 



16 19-3 49-3 0-0178 241 2-91 0'92 



0'81 



5-8 51-0 0-0124 51 13-91 0-93* 



0-86* 



17 38-7 54-8 45'5 0-0297 791 0-87 0'91 



0'90 



19-3 50-8 0-0124 167 4-18 0'92 



38-7 46-0 0-0280 741 0-92 0-90 



0-80 

 15-5 45-5 0-0297 307 2-17 0-88 



0-81 



1-9 50-0 0-0150 23 35-08 1'06* 



0'96* 



