320 



BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



instances three or four, series of determinations were made by- 

 Mr. Koch, in order to be perfectly sure of the facts. 



Table 12. 



Sodium Chloride (NaCl) Mol. Wt. 58.5. 



(Series 1.) 



*The results in Series 3 are those of Mr. G. M. Wilcox. In Series 4 a ther- 

 mometer graduated to tenths, which readily permitted the hundredths to be 

 estimated with the aid of a lens, was used, the temperature range being greater 

 than that of the Beckmann's thermometer. 



