The Propinquus Group of the Crawfish Genus Orconectes (Decapoda: Astacidae)
Fitzpatrick, J. F., Jr. (1967-05)
Nine species and subspecies assigned to the Propinquus Group, Propinquus Section, of the crawfish genus Orconectes are evaluated on the basis of 1226 specimens examined. Eleven characters are analyzed statistically and 12 ...
Records of Ohio Fleas (Siphonaptera)
Humphreys, J. G. (1967-05)
A check list of Ohio Siphonaptera is presented, with species distribution records listed by city or county. Twenty species and four subspecies are recorded from Ohio. Chaetopsylla lotoris (Stewart), Conorhinopsylla stanfordi ...
A Test for Penicillins on Chromatograms and in Spot Tests
Goldman, Margaret; Day, Richard A. (1967-05)
Rare Birds at Lake Saint Marys, Ohio
Sipe, James P. (1967-05)
Conversion Yields of Some Photographic Emulsions and Related Factors
Gebel, Radames K. H.; Duke, Gary L. (1967-05)
A method is presented for the determination of the effective average projected grain diameter (d-a) using visual analysis of enlargements of Kodak Tri-X Pan and Kodak Royal-X Pan emulsions. Each was exposed to three light ...