428 BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 
falling into incoherency in its pursuit of impossible distinctions— 
varieties, large type varieties, small type varieties, states, condi- 
tions, and forms. Held to its simple appellative function, the 
binomial should presently come upon a fair stability undisturbed 
by those problems of definition and relationship that, because they 
must continue to trouble our classifications, need not greatly 
disturb the names of the things we seek to classify. 
