Remnant Monument Near Madison. 311 
tists who have had occasion to do work there. These curiosities have 
been formed from the Laurel Limestone of the Niagara series. The 
most eastern exposures of this formation on the Ohio River occur only 
about two miles east of Madison. By the time the formation reaches 
Madison practically its entire thickness is exposed. The monuments are 
first found, going west, in Wilburs Woods, one-half mile north of Mad- 
ison. The accompanying illustrations serve to give some idea of their 
Fig. 3. Isolated monument. 
character. They are a very noticeable feature along the river some 
distance below Hanover Landing, but their full development is found in 
the above mentioned locality. I have noticed these monuments in Jef- 
ferson County at times standing individually as Jug Rock, at times 
maintaining a partial connection with the mother rock, and again being 
only a pinnacle. They can be seen in all stages of development in this 
locality. 
