228 The Size of the Ice-grain tn Glaciers 



The results are embodied in the two following tables. 

 All the weights are given in grammes. They were deter- 

 mined on a Salter's spring-balance which carried 500 grammes, 

 and its scale was divided into intervals of 10 grammes each. 

 Ice-grains which weighed more than 500 grammes were 

 divided in two. 



TABLE I. 



