ACKNOWLEDGMENTS
We thank S. Westrop and N. Czaplewski for reviewing an early version of this manuscript and K. Tidwell for diligently 3D scanning each manus element. We would also like to thank J. Leite and an anonymous reviewer for their insightful comments on the manuscript. This work was completed in partial fulfillment of the requirements for a Master of Science Degree. Support for this research was provided by grants awarded to R. L. Cifelli by the American Chemical Society, Petroleum Research Fund (ACS-PRF#38572-AC8), and the National Science Foundation (DEB 9870173).