264 J. SAKURAI; 



solution were carefully neutralised with powdered amidosul phonic acid 

 with addition of a trace of phenol-phthalein, and filtered with the 

 usual precautions. Then, '20 c.c. of the neutral solution were 

 transferred to the resistance vessel, and conductivity determinations 

 were made in exactly the same manner as with the ;icid. The 

 results are as follows : — 



32 



Mean 147.24 



64 295 .94 -.975 = .9575 .94S-.97 =.9575 .9575 282.46 

 300 .925 -.96 =.9425 .93 -.95 =.94 .9413 282.39 



Mean 282.43 



128 570 .95 -.97 =.96 .95 -.97 =.96 .96 547.20 



575 .945 -.96 =.9525 .94 -.96 =.95 .9513 547.00 



Mean 547.10 



256 1130 .94 -.96 =.95 '94 -.96 =.95 .95 1073.50 



1140 .93 -.955 = .9425 .925 -.955 = .94 .9413 1073.08 



Mean 1073.29 



512 2200 .935 -.97 =.9525 .93 -.97 =.95 .9513 2092.86 

 2240 .915 -.955 = .935 .915 -.955 =.935 .935 2094.40 



Mean 2093.63 



1024 4300 .95 -.97 =.96 .94 -.97 =.955 .9575 4117.25 

 4400 .925 -.95 =.9375 .925-.955=.935 .9363 4119.72 



Mean 4118.49. 



