On ] 
IX. A Continuation of an Account of 
an EJJay towards a Natural Hiftory of 
Carolina and the Bahama Jflands. By 
Mark Catesby, F. R. S. with fome Ex- 
tracts out of the Eighth Set. By 
F)r. Mortimer, Seer. R. S. 
ft , ' k . % f ^ . .. . ' 
A N Account of the preceeding Set is printed in 
N° 438. of thefe Tran factions. Our Author 
begins this eighth Set with the forty-firfl: Plate of 
his Second Volume ; and, as in this Set he treats 
chiefly of Serpents, he hath, by way of Introduc- 
tion, given a fhort Account of the Serpents in gene- 
ral of thefe Countries : He faith, that in Carolina 
he hath Teen about 18 Sorts of Serpents, whereof 
only four are of the Viper Kind, the others of the 
Snake Kind. Befides the different Manner in which 
Vipers and Snakes produce their young, he gives 
fome external Marks whereby, at firft Sight, one 
may judge to which of the two Sorts any Serpent 
belongs. Vipers have long hollow Fangs or Tusks, 
with an Opening near the Point through which 
they emit their Venom when they bite j thefe Fangs 
are articulated to the Jaw, and lie flat when theVi- 
per is not provoked, or hath no Intention to bite ; 
for though his Jaws are full of fmall Teeth, they do 
not feem intended for chewing, but only as fo many 
Beards, like thofe on a Fifh-hook or Arrow, to 
prevent their Prey, when any Part of it is in their 
Mouth, from getting back again. Vipers are of an 
ugly terrible Afpe£t, their Heads are broad, and 
K k their 
