Lafayette College 2 articles published in JoVE Chemistry Preparation of 6-aminocyclohepta-2,4-dien-1-one Derivatives via Tricarbonyl(tropone)iron Zhiyuan Huang1, Zaki K. Phelan1, Rachel L. Tritt1, Shelby D. Valent1, Ziyang Guan1, Yiqun He1, Philip S. Weiss1, Daniel R. Griffith1 1Department of Chemistry, Lafayette College Representative experimental procedures for the addition of amine nucleophiles to tricarbonyl(tropone)iron and subsequent demetallation of the resulting complexes are presented in detail. Neuroscience Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle Maria Cano Garcia1, Steven C. Nesbit1, Chi C. Le2, James R. Dearworth Jr.1 1Department of Biology and Neuroscience Program, Lafayette College, 2Department of Information Technology, Computer Science, and Digital Media, Juniata College This protocol describes how to use an in vitro isolated turtle head preparation to measure the kinematics of their eye movements. After removal of the brain from the cranium, cranial nerves can be stimulated with currents to quantify rotations of the eye and changes in pupil sizes.