The Terms of Hioplastoloyy. — Hyatt. 301 
The term used by Buckman and Bather, "brephic," derived 
from IJ/jt-ipiyo; . is perhaps etymologically preferable to nep- 
ionic bul unluckily it was not used in isss. Nepionic* has 
been used by authors on this side id' tin- Atlantic in several 
essays and is found in the Century Dictionary, and therefore, 
consistently with the principles adopted by Buckman and 
Bather and myself to depart from established terms as little 
as practicable, it should be perpetuated. It has not deserved 
the sharp criticism of these authorities, since it i- not an "im- 
possible corruption of the Greek." It is a convenient term 
and not worse etymologically than one those authors them- 
selves adopted and another which they proposed. Embryonic 
has a precisely parallel history, there being in Greek no au- 
thority for the use of the termination "ic," hut this is adopted 
by them without comment. Hypostrophic derived from 
V7to6rpoq)Ti, also having' no authority for its termination in 
••ic."' was one of the terms proposed by them. So far as the 
purity of the language is concerned, I see no reason why they 
should not do this, since there is no Greek word to which 
'"hypostrophic" could be referred that would make confusion. 
The Phylum. 
Buckman and Bather propose to use the prefix "phyl" for 
forms occurring in the phylum which represent in their adult 
development the stages in the evolution of the phylum which 
correspond with those of the ontogeny, and give an instruct- 
ive table in which Haeckel's physiological terms are placed side 
by side with those proposed for the morphic phenomena. In 
following out the same ideas the following table has been 
.constructed, which differs from theirs only in the use of nepi- 
onic as stated above, and in the interpolation of phylana- 
plasis, etc. as correspondents of anaplasis in ontogeny. 
Summary Table (IIIi. 
Ontogeny or Ontogenetic Phytogeny or Evolution of the 
Development. Phylum. 
Structural 
( touditiuns. 
Stag's. 
Structural 
Conditions. 
Stages. 
1 >\ oamical. 
Anaplasis 
i Embryonic 
-] Nepionic 
' Neanic 
Phylanaplaeis 
^ I'hylembryonio 
- Phylonepionic 
/ Phyloneauic 
Epacme. 
Metaplasia 
Paraplaeis 
Epliebic 
(ierontic 
Phylometaplasie 
Phyloparaplaeis 
Phyleplicbic 
Phylogerontic 
Acme. 
Paracme. 
♦Originally taken from VwTTZOS'.but there is a form Tovn7tlOY. 
