NO EYES, AND MULTIPLE EYES 205 
galleries extending for a distance of as much as 
one hundred and twenty feet, and terminating 
in enlarged sleeping-chambers, or storehouses 
for the reception of their food. 
Found in the subterranean waters in the 
Kentucky caves is a fish (Amblyopsis spelcea) 
that is entirely blind and has no external traces 
of eyes. It is quite a small species, rarely 
exceeding five inches in length, and its ventral 
fins are rudimentary, or may even be absent. 
Its skin is of a pale and colourless tint, that 
upon the head being naked, and that upon the 
body being covered with minute scales. 
Unlike the majority of fish, in which the 
young are hatched from eggs laid by the 
females, it is one of the few species that bring 
forth living fry. 
As it is necessary for the fish to eat in order 
to live, the reader may very well inquire how 
can it capture its food if it is unable to see it ? 
But Nature has provided for its needs by 
endowing it with a very acute sense of hearing 
and, more important still, a series of very 
sensitive organs of touch, consisting of numerous 
ridges or wrinkles situated on either side of the 
head, that enable it to find its way about in 
the dark. 
The fish obtains most of its food near the 
surface of the water—few living creatures 
