The professor, knowing that a species of mulberry-tree grew in Canada, proposed to the Royal Society of Stockholm a voyage to that country, for the purpose of learning whether the plant in question could be naturalized in Sweden. The proposal being acceded to, he made choice of PETER KALM, one of the most promising of his students. In 1747, he departed for America, where he remained three years. In 1751, he returned to Abo, in Finland, where his patron had obtained a professorship for him, and published an account of his voyage. The Canadian mulberry-tree (_Morus rubra_) was in fact introduced by him into Sweden, and seems in some degree to have answered the purpose intended; but, although the government offered a premium for its cultivation, the silk-manufacture of that country has never succeeded. Kalm, after travelling in various parts of Russia, died at his own residence in 1790. His travels in America were translated into English by John Reinhold Forster, who accompanied Captain Cook on his second voyage. Rolander embarked for Surinam in 1755; Toren, in 1750, for the coast of Malabar and Surat; and Osbeck for China in 1751. The journal of the latter was also translated by Forster. But the most distinguished among the more fortunate travelling-pupils of Linnaeus were Sparrmann and Thunberg, the latter of whom became his successor in the university. ANDREW SPARRMANN studied medicine at Upsal, where, by his attention to natural history, he attracted the notice of the celebrated professor of that science. In 1765, he made a voyage to China with his cousin, Captain Ekeberg, who commanded a ship belonging to the East India Company, and who was also fond of similar studies. On his return, he described, in an academic thesis, the plants and animals which he had collected on this voyage. Having now formed a strong attachment to botany and zoology, he again became desirous of travelling; but his poverty would have prevented him had not his friend Ekeberg procured for him the office of tutor to the children of a person residing at the Cape of Good Hope, where he arrived in 1772. Soon after, he had the pleasure of meeting his countryman Thunberg, from whom, however, he was soon forced to separate; and in October made a journey to Paarl, on his return from which he occupied himself with a description of the plants indigenous to the district in which he resided. Captain Cook, on his second voyage, having arrived at the Cape, the two Forsters, who accompanied him as naturalists, went to see Sparrmann, and persuaded him to go along with them. This he was not loath to do, and, accordingly, had the pleasure of circumnavigating the globe. On revisiting the Cape, in July 1775, he subsisted by practising medicine, and in a short time acquired sufficient funds to enable him to undertake an excursion into the interior. He penetrated 350 leagues in a north-easterly direction, and returned with a large stock of plants and animals. The same year he