Calcium phosphates are the mineral component of bones and teeth. As such there is great interest in understanding the physical mechanisms that underlie their growth, dissolution, and phase stability. Control is often achieved at the cellular level by the manipulation of solution states and the use of crystal growth modulators such as peptides or other organic molecules. This chapter begins with a discussion of solution speciation in body fluids and relates this to important crystal growth parameters such as the supersaturation, pH, ionic strength and the ratio of calcium to phosphate activities. We then discuss the use of scanning probe microscopy as a tool to measure surface kinetics of mineral surfaces evolving in simplified solutions. The two primary themes that we will touch on are the use of microenvironments that temporally evolve the solution state to control growth and dissolution; and the use of various growth modifiers that interact with the solution species or with mineral surfaces to shift growth away from the lowest energy facetted forms. The study of synthetic minerals in simplified solution lays the foundation for understand mineralization process in more complex environments found in the body.

Interview with Alma Clark, first-generation descendant through marriage of Quakertown residents, as part of the Quakertown Oral History Project. The interview includes Clark's personal experiences about childhood and education, marrying Rev. "Willie" Clark, moving to Denton, and participating in Denton Christian Women's Fellowship. Clark also discusses her family's experience in Denton as well as her husband's feelings regarding Denton's Civic Center Park, on the site of Quakertown. The interview includes an appendix with photographs.

Interview with Denton resident Cassandra F. Berry, UNT employee with a personal interest in the history of Quakertown, as part of the Quakertown Oral History Project. The interview includes Berry's personal experiences about working at UNT as the Associate Vice President for Equity and Diversity, as well as her service to the Denton African American Museum, which led to her interest in the history of Quakertown.