Next a piece of ice in the cubical form, as nearly as could be 

 cut and shaved, with a side of 3.54 cm. or 44.356 cm. 3 in volume 

 was used and the following data obtained, the method of pro- 

 cedure being the same as in the previous case. It will be noticed 

 that the amount of exposed surface in this case is approximately 

 one-half as much as in the previous part of the work. 



TABLE 28. Data obtained by weighing method. 



Surface area 75. 18 cm 3 . Volume 44.36 cm". Weight 40.81 g. 



Average per hour .0637. 



The data were obtained by the same method, same apparatus, 

 and in the same place .as the data in Table 23. 



The average evaporation was 0.0637 g- P er hour. The 

 area of the exposed surface was approximately one-half of 

 that in the first part being 75.18 cm. 3 while in the first it was 125 

 cm. 3 The amount of evaporation is approximately one-half, 



47 



