2. The water mass mixes constantly, so that it is always homogeneous in temperature and 

 salinity. 



With such assumptions, the following characteristic instances may occur: 



1 . The ice placed in water melts either partially or wholly due to the heat reserve in the 

 water, as a result of which, the water becomes cool, and, if the salinity of the ice is lower than 

 the salinity of the water, it becomes fresh. 



2. Ice placed in water increases the freezing due to the supply of cold in the ice itself, and 

 the salinity of sea water is somewhat raised due to the formation of an additional mass of ice 

 (again under the usual condition that the salinity of the ice is lower than the salinity of the water). 



3 . Ice placed in water neither melts nor freezes . 



Thus, when water and ice come in contact, thermic and saline interactions generally occur, 

 for determining which, (assuming the existence of both water and ice), I use the following 

 formulas: 



For thermic interactions: 



McJ/^-^) + (A^-"Ka-^)+nc,(/,-0°) + ncJO°-T) = Xn, 



where M is the initial mass of water, 



N is the initial mass of ice, 



n is the mass of ice which had melted or accreted upon contact with the water, 



Cyj is the specific heat of the water, 



c . is the specific heat capacity of the ice, 



t^, is the initial temperature of the water, 



t j is the initial temperature of the ice, 



T is the final temperature of the water equal to its freezing point, 



A. is the heat of fusion. 



By means of a corresponding transpositions obtained from formula (1): 



._ Afc^(/'^-T)+Nc,(/,-T) 



(1) 



n = 



>^+(c^— c.O-f 



It follows from formula (2) that when n =0, i.e., on the condition that the ice placed in 

 water neither melts nor freezes, the following equation should hold. 



(2) 



(3) 



155 



