20 



ART 8.-S. NAKAMURA. 



Table VI. 



/— 0.2145 (-4pM=2.483xl0" 

 Mean temp. = 11°.0 C. 



tssL) 



\ sec /■ 



§ 6 I conclude from tbe preceding experiments that so far as 

 NaCl and ZnS0 4 are concerned, h is independent of the concentration, 

 and Fick's law is satisfied fairly well by them. As to the numerical 

 values of k, the results. of several experimenters do not agree with one 

 another. Table VII is formed by reducing the experiments of Gra- 

 ham, Scheffer and Schuhmeister under the supposition that /.; is a 

 function of temperature only. 



§ 7. \ï k be taken as :i linear function of u as was supposed by 



