William Hallowes Miller. 3883 
. e v 
in the growth of crystallography. This growth has followed 
the usual order of science, coe here as elsewhere the early gross 
history, and not attach undue importance to structural formule 
and similar mechanical devices, which, although useful for aid- 
ing the memory, are simply hindrances to progress as soon as 
the necessity of such assistance is passed. And when the life 
of a great master of science has ended, it is well to look back 
