This thesis has explored the diffusion of tile drainage in Delaware County, Indiana. The study discussed some of the deterrents that hampered agricultural development in the county. These obstacles included the presence of thick forests, vast areas of swampy lands, poor transportation facilities and the absence of local markets. Methods of overcoming some of these problems were then discussed. These included the clearing of forests to prepare land for cultivation, and the use of open ditches and clay tiles to drain the marshes.In addition, the introduction of new drainage techniques such as the laser beam, plow drain, and plastic tile were also discussed. The rate of adoption of plastic tile was then tested statistically to find out if it followed any pattern of distribution. Data obtained through interviews with selected farmers revealed that such an innovation will tend to approximate a growth or "S"-curve in about 1980. The study concluded that the majority of Delaware County farmers are still using clay or concrete tiles.

For this project I revised and rewrote the commercial zone districts Jefferson County, Missouri, to address the common problems related existing commercial zone districts. The existing districts are either permissive or too limited. The vast majority of commercially zoned property in the County is zoned one district, a district that allows nearly eve commercial use. The Planning Staff has a difficult time keeping large commercial uses away from uses that could be adversely affected. I the commercial zone districts of four counties and used ideas from each to write new commercial zone districts. These proposed districts contain ranges of uses that will encourage new commercial development in areas of the county that do not have the infrastructure to support large-scale co development, but that could support smaller development. This project shows some of the problems counties have with commercial zone dist some solutions to these problems, and some techniques that can be u revise and rewrite a zoning ordinance. / Department of Urban Planning

Shale samples from three Upper Pennsylvanian assemblages overlying the Danville (No. 7) Coal Member in Sullivan County, Indiana were compared with respect to miospore content. Eight samples from each of the Hawthorn, Dugger and Minnehaha mines were chemically macerated and analyzed for pollen/spore content. A total of 108 species assigned to 40 genera were recovered. A comparison of the palynoflora from the three assemblages reveals 17 genera and 32 species found in common. The palynoflora is dominated by the following four genera: Lycospora, Laevigatosporites. Punctatisporites and Punctatosporites. Genera of secondary importance include: Spinosporites, Crassispora, Calamospora, Latosporites, Cycloqranisporitesand Thymospora. These findings are similar to other palynofloras of comparable age from the United States and Europe.Abundance data at each site from the three localities were analyzed using cluster analysis. This was achieved employing the Baroni-Urboni-Buser correlation coefficient (complete linkage, furthest neighbor strategy). This method uses presence-absence data to indicate association between sites. Results revealed few taxonomic differences within or between mines. The uniformity in palynoflora observed between all sites is indicative of contemporaneous deposition which represents a regional flora. Percentage of miospore components assigned to previously established plant affinities were arranged by major plant groups. This allowed indirect comparison with megaflora from the same area as reported by Pheifer (1979). Results were found to be complementary and corroborative. Data from the three mines revealed an abundance of arborescent lycopods, ferns and sphenopsids with few gymnosperms. This is suggestive of current paleoenvironmental models which indicate a wet swamp regime.It is likely that the three areas in this study represent a small portion of a vast freshwater swamp located on the eastern periphery of the Illinois Coal Basin. This interpretation is substantiated by species composition, uniformity in palynoflora and absence of species associated with saline environments. / Department of Biology

The purpose of this study was to determine how agriculture on both the national and local level has responded to a variety-of cultural and technological factors, including governmental policies and international trade, during the years from 1920 to 1964. Darke and Mercer counties were chosen for the examination of local data because of their predominantly agricultural orientation.

Graduation date: 1981

Thesis (M.A.)--Oregon State University, 1988. / Typescript (photocopy). Mounted photographs. Includes bibliographical references (leaves 95-104). Also available online.

Dissertation (Ph.D.)--Auburn University, 2006. / Abstract. Includes bibliographic references.

Thesis (M.A.)--State University of New York at Binghamton, Dept. of Geography, 2006. / Includes bibliographical references.

Thesis (Ph. D.)--University of California, San Diego, 1997. / Vita. Includes bibliographical references (leaves 373-401).

Issued also as Thesis (Ph. D.)--Columbia University.