76 MUSHROOM CULTURE. 



from twenty to one hundred feet, sometimes reaching one 

 hundred and fifty and one hundred and sixty feet from the 

 surface of the earth. They are so large that sometimes 

 people are lost in them. In one instance the proprietor 

 of a large cave went astray, and it was three days before 

 he was discovered^ although soldiers and volunteers in 

 abundance were sent down. Is it possible that in a 

 great raining and excavating country like ours we cannot 

 establish the same kind of industry ? 



