http://hdl.handle.net/1811/1151 Wed, 19 Jun 2013 13:40:44 GMT 2013-06-19T13:40:44Z http://hdl.handle.net/1811/5304 Back Matter Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5304 1967-05-01T00:00:00Z http://hdl.handle.net/1811/5303 Book Reviews Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5303 1967-05-01T00:00:00Z http://hdl.handle.net/1811/5302 Rare Birds at Lake Saint Marys, Ohio Sipe, James P. Author Institution: 1113 Neil Avenue, Saint Marys, Ohio Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5302 1967-05-01T00:00:00Z Sipe, James P. http://hdl.handle.net/1811/5301 A Test for Penicillins on Chromatograms and in Spot Tests Goldman, Margaret; Day, Richard A. Author Institution: Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221 Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5301 1967-05-01T00:00:00Z Goldman, Margaret Day, Richard A. http://hdl.handle.net/1811/5300 Records of Ohio Fleas (Siphonaptera) Humphreys, J. G. 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 Stewart, Doratopsylla blarinae C. Fox, Epitedia wenmanni testor (Rothschild), Stenoponia americana (Baker), Peromyscopsylla scotti I. Fox, and Oropsylla arctomys (Baker) are new state distribution records. Author Institution: Department of Zoology, Ohio University, Athens, Ohio Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5300 1967-05-01T00:00:00Z Humphreys, J. G. http://hdl.handle.net/1811/5299 Book Review Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5299 1967-05-01T00:00:00Z http://hdl.handle.net/1811/5298 A New Species of Draeculaacephala (Homoptera-Cicadellidae) from Chile DeLong, Dwight M. A new species of Draeculacephala, D. chilensis, is described from Chile, this species is in DeLong collection. Author Institution: The Ohio State University, Columbus, Ohio 43210 Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5298 1967-05-01T00:00:00Z DeLong, Dwight M. http://hdl.handle.net/1811/5297 Book Review Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5297 1967-05-01T00:00:00Z http://hdl.handle.net/1811/5296 Conversion Yields of Some Photographic Emulsions and Related Factors Gebel, Radames K. H.; Duke, Gary L. 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 sources of color temperatures 6100°K, 2850°K, and 2040°K, and was developed in Kodak developers HC-110, DK-50, and D-19 for 5, 8, 12, and 20 minutes at 68°F. For 5- to 20-minute developing times, dA was determined, from a total of over 12,000 counts, to be from ~ 2.1 to ~ 2.4 u for both films. A method for calculating the conversion yield -q (number of grains to total number of quanta focused on the emulsion) is derived. The value y is a function of film density (D); it was found that rj first increases and then decreases, and a theory which explains this behavior in connection with grain formation is proposed; that is, 77 is the result of a superposition of an increasing and a decreasing function. The first is caused by the fact that a photographic nucleus made up of three silver atoms has a lesser probability for development than a four-atom nucleus, where with the increased exposure (number of quanta per unit area), the ratio increases in favor of the latter, resulting in an increasing function. However, the photographic plate, unlike the photoemitter, is a "non-speciereplacing" device; as a result, the percentage of nonactivated silver halides decreases with exposure, making the latter a decreasing function. Typical values for 77 showing this behavior are: Tri-X Pan; 6100°K, spectral region 375 to 700 m/x; HC-110, 8 min, 68°F; ij~0.1% at D = 0.10, T7~O.3% at D = 0.30, rj~0.1% at D = 1.00, and' ^ 0 . 0 0 9% at D = 2.00. For A = 466 mn (peak of P-ll phosphor), r, increases from ~ 0.09% at D = 0.10 to ~ 0.4% at D = 0.40, then decreases to ~ 0.2% at D = 1.00 and ~ 0.01% at D = 2.00. Author Institution: Aerospace Research Laboratories, Wright-Patterson Air Force Base, Ohio Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5296 1967-05-01T00:00:00Z Gebel, Radames K. H. Duke, Gary L. http://hdl.handle.net/1811/5295 The Propinquus Group of the Crawfish Genus Orconectes (Decapoda: Astacidae) Fitzpatrick, J. F., Jr. 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 more qualitatively, principally by determination of comparative frequencies. O. jeffersoni is judged specifically distinct from O. propinquus and the conspecific O. s. sanborni and O. s. erismophorous. All other taxa of the Group are distinct species. A new species from Iowa is diagnosed, but not described. Two distinct subgroups, Propinquus and Sanborni, are proposed and diagnosed. A lectotype and paralectotypes were designated for Cambarus obscurus Hagen and for Cambarus sanborni Faxon. Standard taxonomic characters in crawfishes are discussed briefly with particular reference to the Propinquus Group. Author Institution: Department of Biology, University of Virginia, Charlottesville Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5295 1967-05-01T00:00:00Z Fitzpatrick, J. F., Jr. http://hdl.handle.net/1811/5294 Front Matter Mon, 01 May 1967 00:00:00 GMT http://hdl.handle.net/1811/5294 1967-05-01T00:00:00Z