CHAPTER XI. 



ABOUT HORSETAILS, STONEWORTS, AND 

 PEPPERWORTS. 



THE non-botanical reader must not be deceived by 

 the title of this paper. We do not intend to discourse 



FIG. 115. 



upon the hirsute appendages of the equine race, but 

 upon a tribe of simple flowerless plants, scientifically 



