460 
PHYTOGRAPHY. 
BOOK IV. 
and endosperm contrived for the same part : testa is synony- 
mous with episperm ; putamen with endocarp : for funiculus 
umbilicalis we have trophosperm and podosperm; and, un- 
fortunately, numerous other instances might be adduced. 
The rule to be observed in terminology is evidently this ; that 
as no word ought to have two applications or meanings, so no 
idea should be expressed by more than one term ; and if a 
term, expressive of a distinct point of structure, already 
exists, no new term should, on any account, be created, from 
the fancy that it may be better, or more expressive, than the 
old one. To do so, is not only unwise, but absolutely 
mischievous. 
