‎HORREBOW, PEDER.‎
‎Elementa doctrinae sphaericae, eller En kort og tilstraekkelig underretning om jord- og himmel-kuglernes brug, uddragen og oversat af vores vidtberømte mathematici, herr professor Peder Horrebows.‎

‎Kiøbenhavn, Høppfner, 1750. 8vo. In a modest contemporary half calf binding, with considerably wear. Verso on front board annotated in pencil. Internally nice and clean. 90, (6) pp. + 2 folded plates (Not mentioned in Biblioteca Danica).‎

Reference : 61913

‎Rare first edition of Horrebow's textbook on astronomy. “(Horrebow) was a personal assistant to Ole Römer for four years. In 1714 he was made professor at the university and director of the observatory he held this position for fifty years, although two of his sons had to take care of his professional duties during his last years. He was a member of the academies of Copenhagen, Berlin, and Paris. Horrebow’s scientific life was shaped by two major influences. The first was his daily association during his youth with Römer, of whom Horrebow later spoke with the greatest devotion. Second, in the great fire in Copenhagen in 1728 nearly all of Römer’s papers and unpublished observations were destroyed together with Horrebow’s own observations" and from that time on it remained a matter of personal honor for Horrebow to describe fully Röer’s scientific achievements in order to preserve them for posterity. Throughout his lifetime Horrebow was a fertile author. He wrote several textbooks on astronomy, mathematics, and navigation which had a considerable influence at the university and at Danish schools."" (DSB) Biblioteca Danica II, 65 (does not mention the two plates present here).‎