AHANEA, OR SPIDER. 361 
tyes in the face, and the three stemmata, 
or little single eyes, on the top of the 
head. 
Mother, Yoa are right; but the 
spider is not able to turn its head • 
and being obliged to exert great vigilance 
to entrap its prey, as well as to guard 
against the attacks of numerous enemies, 
such as birds, ichneumons, and other 
large insects, it has been furnished with 
these additional means of perception^ 
The eyes are immoveable, and, like the 
stemmata, each is formed of a single 
lens. Though placed in different relative 
situations on the top, in tlie front, and 
on each side of the head, yet the two 
eyes, nearest to the moutli, always pro- 
ject and incline forward ; while another 
pair project and incline backwards. 
Lucy, So that the creature can see in 
every direction : no wonder that it can 
so quickly pounce on the poor flies. 
Mother, It has also eight legs, of 
different lengths, in each of which there 
are three joints ; and the feet terminate in 
