Front Matter
p. 0
Article description | Article Full Text PDF (1063KB)

Preglacial, Interglacial and Postglacial Changes of Drainage in Northeastern Ohio with Special Reference to the Upper Muskingum Drainage Basin
Coffey, George N. pp. 373-384
Article description | Article Full Text PDF (966KB)

Origin of Taste Buds in the Oro-Pharyngeal Cavity of the Carp (Cyprinus Carpio Linnaeus)
Edwards, Linden F. pp. 385-397
Article description | Article Full Text PDF (1415KB)

Venational Characters in Typhlocybinae Wings
DeLong, Dwight M. pp. 398-402
Article description | Article Full Text PDF (816KB)

Temperature Gradient in the Egg-Laying Activities of the Queen Bee
Dunham, W. E. pp. 403-410
Article description | Article Full Text PDF (1168KB)

Notes on the Odonata Occurring in the Vicinity of Silver Lake, Logao County, Ohio, from June 25 to September 1, 1930
Borror, Donald J. pp. 411-416
Article description | Article Full Text PDF (418KB)

Index to Volume XXX
pp. 417-418
Article description | Article Full Text PDF (157KB)

Back Matter
p. 999
Article description | Article Full Text PDF (976KB)