490 PROCEEDINGS OF the' rocResteh meeting 



plussed more geologists than any other section. The publication of 

 reports, as then customary, by volumes covering political areas, has 

 partly obscured the glory of Claypole's work, although Doctor Lesley 

 frankly credited him with it in his introductory remarks. 



The significance of these determinations, as measured by the work in- 

 volved, may lose force in distant perspective, but his fellow-workers can 

 understand what it meant in those .days to get the facts, and some can 

 rightly estimate the value of the deductions and their intimate bearing 

 upon their own labors in related fields. It was by these discoveries that 

 a notable controversy was afterward settled and the valued work of a 

 living authority rendered possible and invaluable. The results, epito- 

 mized, of Claypole's work in Perry county, Pennsylvania, were : 



1. The identifying of No. V (First Geological Survey of Pennsylvania) 

 as Clinton and Onondaga. 



2. Demonstration of the absence of hitherto assigned Niagara and 

 Corniferous. 



3. Allotment of previously assigned Corniferous to Marcellus. 



4. Definition of Upper Hamilton, Genesee, and Portage. 



5. Discovery of Chemung and Catskill fauna extending high up into 

 so-called Catskill. 



6. Tracing of Kingsmill. sandstone in all Catskill outcrops. 



The finding of fish remains in Silurian rocks was an epoch-making 

 discovery in itself, but the presentation of the facts and the detailed and 

 painstaking studies given the fragments by Doctor Claypole were far 

 more worthy of commendation. He continued to develop the subject 

 long after retiring from the survey, and these contributions are among 

 his best. The drawings were made by himself, and most of them are* 

 remarkable for their accuracy and clearness. Later, in Ohio, he bestowed 

 much attention upon the Placodermsof the Devonian, publishing many 

 papers on the anatomy of Cladodonts and their stratigraphic range. 



In later years he wrote more of philosophic character, for which his 

 long life of preparation and rumination had thoroughly equipped him. 

 His paleontologic studies continued, and he won the Walker Prize as 

 late as 1895, for his essay on " Devonian formation of the Ohio basin,'' 

 an admirable review which, unfortunately, has never been published. 

 He also continued his glacial studies when so placed as to have mate- 

 rial at hand, and he was still hard at work garnering new facts from 

 the Sierras of California when the end came. Shortly before his death 

 he read a valuable paper bearing upon these researches before the Cor- 

 dilleran Section of the Geological Society of America. 



To those privileged to know him well, Doctor Claypole was the em- 

 bodiment of simple, faithful, modest worth, exerting an influence, like 



