Carl Linnaeus a rare book, if he let Linnaeus stay with him, and Burman accepted. On 24 September 1735, Linnaeus moved to Hartekamp to become personal physician to Clifford, and curator of Clifford's herbarium. He was paid 1,000 florins a year, with free board and lodging. Though the agreement was only for a winter of that year, Linnaeus practically stayed there until 1738. It was here that he wrote a book "Hortus Cliffortianus", in the preface of which he described his experience as "the happiest time of my life." (A portion of Hartekamp was declared as public garden in April 1956 by
Carl Linnaeus the Younger the age of 42. He had inherited his father's extensive scientific collections of books, specimens, and correspondence and had worked to preserve them. In October 1784 his mother, Sara Elisabeth (1716-1806), sold the library and herbarium to the English botanist, Sir James Edward Smith (1759-1828). After his death his widow, Pleasance Smith (1773–1877), sold the collection to the Linnean Society of London. Together with his parents, Carl Linnaeus the Younger was buried in the family grave of Uppsala Cathedral. Carl Linnaeus the Younger Carl Linnaeus the Younger, Carolus Linnaeus the Younger or Carl von Linné d. y. (20 January 1741