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DENISON UNIVERSITY 
BULLETIN 
Volume XXIV, No. 5 
Journal 
OF THE 
Scientific Laboratories 
Valume XX 
Articles 9-13 
Pages 187 to 383 
9. Trichoptilus pygmaeus Wlsm. and the Neuration of 
the Family Pterophoridae. By A. W. Lindsey 187 
10. Notes on American Paleozoic Cephalopods. By Aug. 
F. Foerste 193 
11. A Report on the Theory of Relativity (Einstein 
Theory). By P. Biefeld 269 
12. Some Problems of Taxonomy. By A. W. Lindsey 289 
13. Notes on the Geology of Giles County, Virginia. By 
George D. Hubbard and Carey G. Croneis 307 
Subject and Author Index 379 
GRANVILLE, OHIO 
DECEMBER, 1924 
The University Bulletin is issued bi-monthly and is entered at the 
Post Office in Granville, Ohio, as mail matter of the Second Class 
