42 



THE ATOMIC WEIGHTS OF 



That this new value (10.900) really does not seriously conflict 

 with most previous determinations of this constant and in fact 

 is actually supported by a number of them will be shown in 

 Chapter III. 



TABLE 1. 



NOTE: The braces are to indicate that the four samples of "borax glass," although 

 taken from the same original preparation of borax, represent three different lots 

 that had been dehydrated independently. 



THE ATOMIC WEIGHT OF BORON REFERRED TO " BORAX GLASS." 



Table 2 has been compiled from data recorded in table 1. 

 It shows how, and to what extent, an incomplete dehydration of 

 borax (yielding "borax glass") would have affected the atomic 

 weight of boron. It also shows that a tolerably concordant series 

 of results would have been reached if ordinary "borax glass" had 

 been used as the initial substance, as the average indicates that 



