BULLETIN 
OF THE 
SCIENTIFIC LABORATORIES 
OF 
DENISON UNIVERSITY, 
EDITED BY 
i 
yJ 
C. L. HERRICK, Dep’t. of Geol. and Nat. History, 
AND 
A. D. COLE, Department of Chemistry and Physics. 
VOL. II, PART 1. 
GRANVILLE, OHIO, APRIL, 1887. 
i- 
