and depicted 15 grapevines and a hand in the upper left corner with a scroll reading "Qui Transtulit Sustinet", "He who transplanted sustains". In 1647 Major John Mason assumed command of Saybrook (Colony) Fort, which controlled the main trade and supply route to the upper river valley. The fort promptly and mysteriously burned to the ground, but another improved fort was quickly built nearby on the Battery Mound. He spent the next 12 years there and also served as commissioner of the United Colonies, the chief military officer, magistrate, and peacekeeper. In 1659, almost all settlers from Saybrook under the leadership of Mason, purchased land from Uncas, sachem of the Mohegan tribe, removed to and founded Norwich, Connecticut. This second fort was eventually abandoned after 200 years and the battery mound remained until 1871, when the Valley Railroad leveled it and other hills on the point to provide needed fill for their tracks across the north and south coves. In 1661, a witch trial was held of Saybrook residents Margaret Jennings and her husband Nicholas, who were accused of causing the deaths of Marie Marvin and others. The trial resulted in a finding that they were probably witches, but the proof was not sufficient to execute them. On October 9, 1701, the Collegiate School of Connecticut was chartered in Old Saybrook. It moved to New Haven in 1716, and was later renamed Yale University. Turtle—the first American submarine—was invented in Westbrook, Connecticut, in 1775 by David Bushnell; a replica is housed at the Connecticut River Museum in Essex. The General Assembly created the separate town of Old Saybrook from Saybrook in 1852. Old Saybrook was partitioned again in 1854, when the northern part became the town of Essex. A 1964 meeting at Old Saybrook, the First Invitational Conference on Humanistic Psychology, was key to the early development of humanistic psychology. Saybrook University in California, established in 1971, is named after the conference. Later development In early 2007, plans were established to return the former town hall building to its original use as a theater. The theater was completed in 2009 and is named the "Katharine Hepburn Cultural Arts Center and Theater". The town has committed spending almost $2 million on the renovation, and at least $810,000 were to be contributed by the state. A committee was attempting to raise another $2.5 million, partly for the renovation and to add two