Preface. 19 
that some wells and springs having considerable reputation 
have been omitted; but if this proves to be the case, it is be- 
cause diligent inquiry has failed to find them. 
Most of the plates are made from photographs by the author, 
the object being to show what improvements have already been 
made and what natural advantages the localities offer. The 
plates showing geological sections and maps illustrative of geo- 
logical position, as well as the text of two important chapters, 
were prepared by Dr. W. R. Crane, of the University Faculty. 
