The strongest expression of this interest in SWEDENBORG’s scientific work in the most recent times, was that manifested during the International Swedenborg Congress, held this summer in London. On that occasion were gathered there representatives for numerous branches of the natural sciences, medicine, philosophy and theology, each one of whom contributed his account of the discoveries, inventions, and far-sighted utterances which SWEDENBORG had made within these several departments of knowledge. And imposing indeed was the homage which was as a consequence paid to the ingenious investigator as well as to the Country and the University which had produced him. SWEDENBORG’S INVESTIGATIONS IN NATURAL SCIENCE. Before a life-work such as that of EMANUEL SWEDENBORG one cannot but be filled with admiration. Perhaps not so much on account of the _manysidedness_ of it; for that was not so very unusual at the time in which SWEDENBORG lived—in the 18th century;[12] but because his researches were at the same time so _comprehensive_ and _penetrating_, because he made such great and important conquests within the most different departments of knowledge; indeed, in many places discovered by his sharpsighted genius the _lines of development_ along which science was to proceed for the gaining of its end. SWEDENBORG’S MATHEMATICAL, MECHANICAL AND ASTRONOMICAL INVESTIGATIONS. _Mathematics_, especially geometry, algebra and mechanics, and _astronomy_ in particular, were the predominating interests with SWEDENBORG, when, after having completed his university studies, he entered upon his first foreign journey (1710). He had at that time the good fortune to come into personal contact with (ISAAC NEWTON?),[13] JOHN FLAMSTEED[14] and EDMUND HALLEY[15] in England, and with the renowned mathematicians PHILIPPE DE LA HIRE and PIERRE VARRIGNON[16] in France, and to enter into an interchange of scientific ideas with them. And the impulses derived from teachers of such great insight and skill did not take long in manifesting themselves. In 1714 SWEDENBORG was able to send home accounts of a great many _mechanical inventions_ which he had made and the ›correctness of which he proved by mathematical and algebraical calculations.›[17] As examples of these discoveries may be mentioned his flying machine,[18] submarine boat, steam engine, mitrailleuse, sluice constructions, etc.[17] After his return to Sweden he found opportunities of putting into practice some of these projects, when (in 1716) he was appointed assessor extraordinary in the College of Mines and ordered to assist CHR. POLHEM ›with the construction of his buildings and inventions›. But he was rich in ideas and quick-witted enough to be able, together with these official duties, to plan and set on foot the publication of a periodical devoted to natural science, ›_Daedalus Hyperboreus_›, the first scientific periodical in Sweden, and to furnish it abundantly (during the years 1716-1718) with valuable