THE MAMMOTH CAVE. fo 
of astonishment that no general account of it 
can be obtained among the booksellers by those 
who are desirous of information regarding its 
wonders. 
Upon arriving at the Cave we found a small 
pamphlet for sale, entitled “A Guide Manual 
to the Mammoth Cave of Kentucky. By 
Charles W. Wright, M.D., Professor of Chem- 
istry in the Kentucky School of Medicine, 
formerly Professor of Chemistry in the Medical 
College of Ohio.” Printed at Louisville, Ky., 
by Bradley & Gilbert, 1860. 
This manual explains very satisfactorily the 
chemical and mechanical causes which were 
exerted in the formation of the Cave, and 
briefly indicates all the chief points of interest 
which should attract the notice of the visitor 
in his explorations, and, we believe, is thor- 
oughly reliable in all these particulars. Its 
circulation, however, is limited to those who 
visit the Cave, rarely coming before the general 
reader; and it is probable that the majority of 
visitors, as in our case, have no opportunity of | 
examining and profiting by it until after their 
departure, and then it is generally thrown aside 
and forgotten. 
Since our visit we have made every effort to 
