It was just when systematic Botany had fallen back to its lowest level that Morison appeared upon the scene. He had been born at Aberdeen in 1620, and had there graduated Master of Arts with distinction by the time he was eighteen years old. His further studies in the natural sciences were interrupted by the Civil War, in which he took part on the Royalist side, being severely wounded in the battle of the Brig of Dee (1644). He fled to France, and there resumed his preparation for a scientific career with such success that he obtained, in 1648, the degree of Doctor of Medicine at the University of Angers. From that time onwards he devoted himself entirely to the study of Botany, which he pursued in Paris under the guidance of Vespasian Robin, Botanist to the King of France. In 1650 Morison was appointed by the Duke of Orleans, on Robin's recommendation, to take charge of the royal garden at Blois, a post which he held for ten years. The Duke of Orleans, shortly before his death early in 1660, had occasion to present Morison to his nephew King Charles II who was about to return to his kingdom. Soon after the Restoration, the King summoned Morison to London; and in spite of tempting offers made to induce him to remain in France, Morison obeyed the summons and was rewarded with the title of King's Physician and Professor of Botany with a stipend of two hundred pounds a year. During his tenure of these offices Morison found time to complete his first botanical work, the _Praeludia Botanica_, which was published in 1669; the same year in which he was appointed Professor of Botany in the University of Oxford.