[ 31 J 
fhould be very difingenuous, if I did not own ‘my 
obligations in this refpeét to the works of Arrenr, 
Dr. Gronovius, and Linnavs, 
It is from the laft I have copied the great fections 
of the Bony F'isu into 
APOoDAL, _Jucurar, 
Tuoracic, | ABDOMINAL*, 
He founds this fyftem on a comparifon of the 
ventral fins to the feet of land animals or reptiles, 
and either from the want of them, or their particu- 
lar fituation in refpect to the other fins, eftabiifhes 
his fections. | 
In order to render them perfectly intelligible, it 
is neceffary to refer to thofe feveral organs of move- 
ment, and fome other parts, in a pertect fifth, or 
one taken out of the three lait feétions, 
Whe Hapock., Expl. Pl: jig. 4, 
a. ‘The pectoral fins. 
b. ventral fins. 
Gi anal fins. 
d. caudal fin, or the tail. 
é.é. €. | dorfal’ fins. 
ye bony plates that cover the gilis. 
5 branchioftegous rays, and their mem- 
branes. 
hb. 
lateral, or fide line. 
* 
* Vide Syft. Nat. 422. 
