THE MAMMOTH CAVE. 89 
means of a small scoop-net, which is gently 
carried beneath them. 
Professor B. Silliman, Jr., who visited the Cave 
in the autumn of 1850, published the following 
observations on the blind fish and the blind craw- 
fish, in “ Silliman’s Journal” for May, 1851: 
“Of the fish there are two species, one of 
which has been described by Dr. Wyman in the 
‘American Journal of Science,’ and which is en- 
tirely eyeless; some ten or twelve specimens of 
the species were obtained. The second species 
of the fish is not colorless like the first, and it 
has external eyes, which, however, are found to 
be quite blind. The crawfish, or small crusta- 
cea, inhabiting the rivers with the fish, are also 
eyeless, and uncolored; but the larger-eyed and 
colored crawfish, which are abundant within the 
Cave, are also common, at some seasons, in the 
subterranean rivers, and so also, it is said, the 
fish of Green River are to be found at times of 
flood in the rivers of the Cave. Among the 
collections are the larger-eyed crawfish, which 
were caught by us in the Cave.” 
For the benefit of those who may feel inter- 
ested in the scientific characters and peculiarities 
of the Cave fish, we will quote the observations of 
two authorities, whose names are generally recog- 
g* 
