440 cross. 
single arborescent individuals should be found in glass, and 
also the intermediate stages between the individual and the 
regular complex of such forms observed in spherulites, if it 
is to be argued that the latter are wholly due to the 
crystallization. Between spherulites due to radiate crystal¬ 
lization alone and those whose structure seems to demand 
the assumption of another nearly contemporaneous agency, 
there are many forms whose relationships are not yet per¬ 
fectly clear. 
It is the writer’s hope that the foregoing descriptions may 
contribute somewhat to our knowledge of the constitution of 
spherulites, and that the speculative portion may also prove 
to be of some value. 
