APPENDIX. 225 
ing the entrance of this Cave ; the wonderful succession of 
domes,—many of which are viewed from the base; the 
endless variety of stalactite and stalagmite formations, all 
contribute toward rendering a visit peculiarly attractive 
and interesting. Some even go so far as to say that there 
is not another Cave on this continent in which there is 
such a magnificent display of the chemical and mechan- 
ical action of water. The gypsum formations, such as 
rosettes, fibers, etc., are not less attractive. Dr. Wright 
tells us that the largest dome to be found in any Cave is 
to be found in Proctor’s Cave. ‘It is at least three 
times as wide and long as Mammoth Dome in Mammoth 
Cave, and not less than one hundred and forty feet in 
height. The Curtain Dome is not less wonderful. Vast 
sheets of stalactite, yards in length and less than an inch 
in thickness, are arranged in the form of. curtains, scrolls, 
ete. in endless variety.” 
Mammoth Cave is deficient only in stalactite forma- 
tions. <A visit to Proctor’s and Diamond Caves renders 
cave-knowledge and experience complete. 
About three miles of this cave is now open to the 
public,-through the greater part of which there is a sub- 
stantial plank walk. 
In a recent letter from Mr. Proctor to the author, he 
remarks, in speaking of this Cave, “I am constantly 
making new discoveries in this Cave; among others a 
large river, as yet inaccessible to visitors, and many 
