MATHEMATICS. 73 



NORDMARCK (ZACHARIAS). Dissertatio de sectione simili linearum 

 rectarum ; praeside F. Mallet. 4 Upsalice, [1776.] 



NORDWALL (ADOLPHUS). Dissertatio sistens theoremata stereome- 

 trica; praeside F. Mallet. 4 Upsalite, [1779.] 



NORWOOD (RICHARD). Epitomy; being the application of the doc- 

 trine of triangles, in certain problems, concerning the use of the plain 

 sea chart, and Mercator's chart [N. Kauffman] ; with a table of artifi- 

 cial sines, tangents, and the complements arithmetical of sines, to radius 

 10,00000, and to every degree and minute of the quadrant; also the 

 logarithms from unit to 1000; as also an universal almanack; 2 pts. in 

 1 vol. 12 London, 1669. 



NUNEZ (PEDRO). Libro de algebra en arithmetica y geometria. 8 

 Anvers, 1567- 



O. 



OHM (MARTIN). Versuch eines vollkommen consequenten Systems der 

 Mathematik ; l..Th. Arithmetik und Algebra; 2 er Th. Algebra und 



Analysis des Endlichen ; 3 er Th. Differenzial-Rechnung ; 4 er Th. Diffe- 



renzial- und Integral-Rechnung ; 5 er & 6 er Th. Fortsezung der Differ.- 



und Integ.-Rechn. ; 6 vols. 8 Berlin, 1828-32. 

 OLDENBURG (HENRY). See Collins (J.). Commercium epistolicum. 



4 1712. 



. 8 1722. 



OLIVERIUS (THOMAS). De rectarum linearum parallelismo. De cir- 



culi quadratura. See Oliverius (T.). De sophismatum praestigiis ca- 



vendis, &c. 4 1604. (Miscellaneous.) 

 OPPEL (FREDERICUS GUILIELMUS de). Analysis triangulorum. fol. 



Dresdce et Lipsice, 1746. 



ORANGE, Prince cT. See Nassau (M.), Prince d'Aurenge. 

 ORIANI (BARNABA). Misura dell' arco del meridiano. See Cesaris 



(A. de). Effemeridi, &c. an. 1827. 8 (Astronomy.) 

 Continuazione degli esempi di calcolo nella trigonometria sferoidica. 



See Cesaris (A. de). Effemeridi, &c. an. 1828. 8 (Astronomy.) 

 . Continuazione e fine degli esempi di calcolo nella trigonometria sfero- 

 idica. See Cesaris ( A. de). Effemeridi, &c. an. 1829. 8 (Astronomy.) 

 . De usu fractionum continuarum, &c. See Cesaris (A. de). Effe- 

 meridi, &c. an. 1786. 8 (Astronomy.) 

 . Elementi di trigonometria sferoidica inseriti nel primo tomo delle 



memorie di fisica e matematica dell' Istituto nazionale Italiano. 4 



Bologna, 1806. 

 OSTERWALD (SAMUEL-FREDERIC). Cours abr%e d'arithmetique et 



des changes. 4 Neuchdtel, 1794. 

 OTHO (L. VALENTINUS). See Rheticus (G.J.). Opus palatinum de 



triangulis. fol. 1596. 

 OUGHTRED (WILL.). Two rulers for calculation. See Forster (W.). 



The circles of proportion and the horizontal instrument. 4 1632. 



. Mydorgius' conical sections. See Moore (J.).Arithmetick,&c. 8 1660. 



. Clavis mathematica denuo limata, sive potius fabricata. 8 Oxonifc, 



1652. 

 . Key of the mathematicks, newly translated with notes, in which 



some problems left unanswer'd by the author are resolv'd ; recommended 



by E. Halley. 8 London, 1702. 

 . Elementi decimi Euclidis declaratio ; nee non de solidis rcgularibus 



tractatus. 8 Oxonite, 1652. 



