138 
Geology op Sydney. 
enfin avec le temps ” Dr. Mantell adds : “ The reader 
will probably think that although the Reverend Canon 
was justly despoiled of his ill-gotten treasure, the 
French Commissioners were but very equivocal repre- 
sentatives of Justice ! ” 
At first sight, the general reader may feel resent- 
ful that a simpler and more truly English name should 
not have been selected for the Labyrinthodonts . In 
this case, however, there is something in a name, for 
the labyrinth structure of the teeth points to a relation- 
ship with some ganoid fishes, which also possessed 
labyrinth-built teeth. It is also known that certain 
reptiles possess teeth showing an approach to the same 
structure. Professor Owen first examined these fossil 
teeth, and discovered that their internal portion was 
made up of a series of foldings lined by a continuation 
of the external cement of the teeth. The name Laby- 
rinthodont , then, awkward though it appears, always 
reminds us that the fossils bearing this name have the 
same peculiar teeth. Also, that this structure brings 
them into relationship with, the lower fishes on the 
one hand, and the higher reptiles on the other. 
Fishes and reptiles, as is well known, form two 
clearly-defined classes, perfectly distinct, one from the 
other. The Labyrinthodonts , it has been discovered, 
form a series of “missing links” between the classes 
of fishes and reptiles. They are termed, in a general 
way, Amphibia , T and Batrachia , from the Greek 
1 Greek — Aviphi, both ; bios, life. 
