HENKY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 637 



12770 NORWOOD (Richard) : Norwood's Epitome : being the Application of the Doctrine of 

 Triangles, in certain Problems, concerning the Lse of the Plain Sea-Chart, and Mercator's 

 Chart, with Table of Artificial Sines and Tangents, and the Complements Arithmetical of 

 Sines, supplying the Use of Secants, to Radius 10,00000, and to every Degree and Minute of the 

 Quadrant; also LOGARITHMS of Absolute Numbers from 1 to 2000, etc. etc. , the last Edition, 

 newly revised and corrected, with diagrams, r2mo. contemporary sheep, I2s Qd 



J. D. for Richard Mount, at the Postern on Tower Hill, 1696 



12771 — The Seamans Practice, containing a Fumdamental [sic] Problem in Navigation, 



experimentally verified, namely, touching the Compass of the Earth and Sea, and the Quantity 

 of a Degree in our English Measures ; also, an exact Method or Form of keeping a Reckoning 

 at Sea in any Kind or Manner of Sailing ; with certain Tables and Rules useful in Navigation, 

 as also of the Plotting and Surveying of Places, etc. etc. etc., 9th Edition, with diagrams {last I. 

 defective) : A Triangular Canon Logarithmical : or a Table of Artificial Sines, Tangents, 

 etc. {corner of 2 II. torn off) — 2 vols. sni. 4to. in 1, old calf gilt, with bookplate of Philip 2iid Earl 

 Stanhope, F.R.S. (RARE), £1. 12* 6«? 



W. Godbid, for Benj. Hurlock, at his shop on London Bridge, 1670 [-67] 

 The second work, beginning with signature Ee 1, and ending with Kk 10, was evidently taken from the author's 

 ' Trigonometrie ', in order to supplement the first. 



12772 Trigonometrie, or, the Doctrine of Triangles, shewing the Mensuration of Right 



lined and Spherical Triangles, with the Grounds and Demonstrations thereof. Both performed by 

 that late and excellent Invention of Logarithms, after a more easie and compendious Manner, 

 than hath been formerly taught. Whereunto is annexed (chiefly for the use of Seamen) a 

 Tre.\tise of the Application thereof, in the three principal Kinds of Sailing ; with exact 

 Tables of the Suns Declination, etc. etc. etc., 7th Edition, bein^ diligently Corrected, in divers 

 difficult Places explained ; New Tables of the Stars right Ascensions and Declinations added, and 

 the whole Work very much enlarged, by the Author himself [with Logarithmic Tables], 

 with numerous diagrams, sm. 4to. contemporary calf {binding slightly damaged, but a sound copy), 

 155 R. W.for W. Fisher, 1678 



Containing at«nd the ' Logarithmes of Ab.solute Numbers from a unity to 10,000', and 'A Triangular Canon Logarith- 

 niicall, or, a Table of Artificiall Sines, Tangents, and the Complements Arithmetical of Sines supplying theuseof Secanis, 

 the Radius 10,0000000, and to every degree and minute of the Quadrant.' 



Referring to Briggs's work on logarithms, the author in his preface mentions : ' Though we both handle the same thing, 

 yet it is in such a different manner, that there is scarce any one proposition handled by us both.' 



Between 1633 and 163.5 the author measured a degree of the meridian between London and York, and in it first em- 

 ployed the compass to avoid deviations from the route measured— a fact unnoticed in D. N. B. 



He was sent out by the Bermuda Company to survey the islands in 1616 (when he was accused of dishonest collusion 

 with the Governor), and is of interest to Americans as having in 1623 patented lands in Virginia, though it is doubtful 

 whether he ever went there. 



' He i)ersonally measured, partly by chain and partly by pacing, the distance between London and York, making 

 corrections for all the windings of the way, as well as for the ascents and descents. He also, from computations of the 

 sun's altitude, computed the difference of latitude of the two places, and so calculated the length of a degree of the 

 meridian. Considering the roughness of his methods and the imperfection of his instruments it is not surprising that his 

 result was some 600 yards too great ; but even so it was the nearest approximation which had then been made in 

 England.'— i). N. B. 



12773 Nti'SSLEB (Karl Gottlob v.) De Hypotheseos quae Recursum Cometarum tuetur 

 Probabilitate, sm. 4to. (pp. 30), sewn {browned), Qs Vitebergae, 1719 



Unknown to Poggendorf and Houzeau and l^ancaster, and to the author's biographer in AUgemnnc Deutsche Biographic. 

 The author occupied with success high judicial positions in Prussia, without however receiving the smallest payment for 

 bis services from his niggardly King. 



12774 O'BRIEN (Matthew, pr., Caius Coll.) Mathematical Tracts, Part I [all pub.] : on Laplace's 

 Coefficients, the Figure of the Earth, the Motion of a Rigid Body about its Center of Gravity, 

 and Precession and Nutation, 8vo. sewn {scarce), Us 6d Cambridge, 1840 



' Containing a certain latitude in the symbolic use of divergent series.'— 7). X. B. 



12775 Treatise on Plane Co-ordinate Geometry, Part I [all pub. , containing Right Lines, 



Circles, and Conic Sections], udth 5 plates, Svo. hf cl., Ss ibidem, 1844 



12776 OBSERVATORY (The): a Monthly Review of Astronomy, edited by Sir W. H. M. 

 Christie, f.r.s., E. W. Maunder, H. H. Turner, T. Lewis, and H. P. Mollis, ff.r.a.s., 

 from 1888 to 1896 (Vols. XL-XIX), with numerous photographic and other plates {including 

 portraits), and woodcuts, 9 vols. 8vo., 7 v. cl., and the rest in nos. (4 nos. wanting), £1. 105 

 (p. £9.) 1888-1896 



12777 OCAGNE (Maurice d', des Ponts et Chaus&ees) Le Calcul Simplifie par les Proc^des 

 Mecaniques et Graphiques ; with 2 folding plates and 38 other illustrations, 8vo. sewn. Is 1894 



12778 Coordonnes Par alleles et Axiales : Methode de Transformation Geometrique et 



Procede nouveau de Calcul Graphique ddduits de la Consideration des Coordonn^es Parallfeles ; 

 withfoldiiig plate and 14 diagrams, 8vo. sewn, \s %d (p. F. 3 nett) 1885 



12779 Cours de G6om6trie Descriptive et de Geometrie Infinitesimale ; with 340 



diagrams, roy. 8vo. buckram, Is (p. F. 12 nett sewn) 1896 



12780 ■- NOMOGRAPHIE : les Calculs Usuels effectu^a au Moyen des Abaques. Essai d'une 



Theorie generale. Rbgles pratiques. Exemples d'Application ; with 8 plates and 38 diagrams, 

 roy. 8vo. sewn, 2s 1891 



12781 ODERIGO (Tommaso, Gentilhuomo Genovese) DiscoRSi Meteorologici et Astrologici sopra 

 la Comet a apparse nel Fine dell' Anno 1652 ; with astrological diagrams, sm. Svo. old vellum (fine 

 copy); rare, £1. Is Genova, 1653 



An early work on comctary meteorology, and unknown to Poggendorff, Brunet, Graesse, and others. 



12782 ODERMATT (Wilhelm, Unterwalden) Zur Kenntniss der Phenolbildung bei der 

 Faulniss der Eiweisskorper: Inaugural-Dissertation, 8vo. (pp. 13), sewn, Is 6d Leipzig, 1878 



