Mirabilibus Auscultationibus,” attributed to Aristotle, 1786; “Antigoni Carystii Historiæ Mirabiles,” 1791; and “Marbodi Liber de Gemmis,” 1799; publications which required the rare combination of physical knowledge with philological learning. The Royal Society of Göttingen had, in the year 1772, admitted him one of its members, and from that period to 1783 he continued to supply their proceedings with interesting memoirs (all written in Latin), among which are the following: “On the Reduction of Fossils to their original substances;” “On the History of Alum;” “On the Sap of Madder;” “On Meerschaum, from which are formed the heads for tobacco pipes;” “On the History of Sugar,” &c. After this period, however, he declined participating any longer in the labours of this learned body; owing, probably, to a change in the objects of his own particular studies. In 1784 he was created an aulic councillor of Hanover; in addition to which he was elected member of the Imperial Academy of Naturalists, of the Swedish Society of Science, of the Academies of Norway and Mayence, of the Physiographical Society of Lund, and of almost all the learned societies in Germany and the North of Europe. With a copious knowledge of the principal sciences, Beckmann united extensive reading in the works of ancient and modern writers, not only in reference to their immediate connection with his main studies, but in respect also to their application generally to every other branch. Convinced that every professor ought, as much as possible, to have thoroughly searched into all matters relating to the subject on which he treats, he spared no expense in forming a most extensive, as well as choice library; at the same time he did not fail to avail himself of the rich intellectual stores contained in that belonging to the university. His mind being wholly directed to all that is practical in human knowledge, it was his especial endeavour to bring it into systematic rules, based upon fundamental principles. To him particularly is to be ascribed the merit of having been the first to give to agriculture its scientific form, and to have separated it more distinctly than heretofore from the administrative and financial departments. The number of pupils indebted to him for their education, and who, eventually,--whether filling offices of state or following his footsteps as professors,--brought into effect the principles he had taught them, formed a very numerous body; and whilst he was thus the means of considerably enlarging the circle of academic subjects for the instruction of the student, he contributed not a little towards the prosperity of the university itself. His activity likewise as a writer was as persevering as it was meritorious; he united an extensive knowledge of nature, with a decided turn for applying it to practical purposes; and he published several works in German, which show this tendency of mind; among others, “Principles of German Agriculture,”