Isaac Habrecht (1589-1633), physician and mathematician, was a native of Strassburg, where he passed the greater part of his life.[53] Incidental references to him assure that he was regarded in his day as a man of much ability. Among his publications, not numerous but scholarly, reference here may be made to his ‘Tractatum de planiglobio coelesti & terrestri,’ issued in Latin in the year 1628, and again in the year 1666 in both Latin and German, by Johann Christoph Sturm of Nürnberg.[54] In this work Habrecht describes his terrestrial and celestial globes, constructed, it appears, a few years previous to the issue of the publication. The Hispanic Society of America possesses a fine example of what appears to be his first terrestrial globe (Fig. 101). It is undated, but internal evidence assures us that it was not constructed prior to the year 1612. Near the Arctic circle and north of the representation of Hudson’s Bay we read “Huc usque retrocesserunt Amstelodamenses anno 1612.” “At this point the Amsterdam (explorers) turned about in the year 1612.” His first celestial globe, referred to below, seems clearly to be of the year 1619, and there is reason for placing his first terrestrial globe in the same year, since, in their size, and in many of their general features there is agreement. The globe ball of wood has a diameter of 20 cm. Its horizon circle, which has pasted on its upper surface the usual information relative to the names of the months, to the principal directions, and to the signs of the zodiac, is supported by four turned legs joined below by crossing bars, these bars in turn supporting a carved circular disc with a raised center through a slot in which the meridian circle is made to pass. The whole is indeed a remarkably well-preserved example of Habrecht’s work. [Illustration: Fig. 101. Terrestrial Globe of Isaac Habrecht, 1625.]