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THE GEOLOGY OF LICKING COUNTY, OHIO, 
Part IV. The Subcarboniferous and Waverly Groups. 
BY C. L. HERRICK. 
In pursuance of the plan outlined in the last volume, material has 
been slowly accumulating, the collection and collation of literature 
and unraveling of perplexed synonomy being by far the most onerous 
task. Nearly every foot of this and much of adjacent counties has 
been searched by patient collectors and, in spite of the great difficul- 
ties, much progress has been made m identifying and referring to their 
horizons the fossils of the Waverly Group. It is hoped that even as 
brief a review of the fauna as can now be presented will prove help- 
ful. Perhaps no other limited group of strata in the Palaezoic era 
has been the theme of more discordant discussion than this one. The 
problem of the Waverly deserves to rank with that of the Keweenaw 
and Taconic. While not claiming to settle the points at issue in this 
paper, it is hoped that the material made accessible by the pictorial 
and descriptive matter presented will at least afford every competent 
palaeontologist with considerable material upon which to base his opin- 
ion. The methods hitherto employed in the study of the Waverly 
have been fatally lacking in several particulars. Generally the de- 
scriptions have been unaccompanied by figures and frequently so hasty 
as to make it necessary to base our opinion as to the accuracy of the 
indentification on the reputation of the writer. No published work 
has given the sequence of fhe fossils attributed to the Waverly, but in 
