HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 203 



4017 RINGELBERGH (Joachim Sterk van) INSTITUTIONES ASTRONOMIC^ ternis libris contentte, 

 quorum primus Sphoerse ac Mundi Naturam declarat : secundus Orbium : tertius Circulorum ; 

 cum Additionibus et Indice; with Sessa's device on title and blank I. at end, woodcut border on 

 sig. A 4 , and diagrams, 16mo. old limp vellum (RARE), 17s 6d 



[col. :] Venetiis, Ant. de Nicolinis de Sabio, sumptu Melch. Sessce, 1535 



4018 RITCHIE (Archibald Tucker) The DYNAMICAL THEORY of the FORMATION of the EARTH, 

 2 thick vols. 8vo. cl., uncut (scarce), 8s Qd 1850 



Attempting to prove ' that the earth did not always rotate round its axis,' an argument to which 1186 pp. are devoted. 



4019 RITCHIE (William, F.R.S.) PRINCIPLES of the DIFFERENTIAL and INTEGRAL CALCULUS, 2nd 

 [last] Ed. by J. ANTHONY SPENCER, diagrams, post 8vo. cl., 3s 1847 



4020 - - PRINCIPLES of GEOMETRY, diagrams, post Svo. cl., 2s Qd 1833 



4021 RITT (Georges) PROBLEMES d'ALGEBRE, et EXERCISES de CALCUL ALGEBRIQUE, avec les 

 Solutions, 4 e Ed. : Bezout (Etienne) ELEMENTS d'ARiTHMETiQUE, reimprime's par J. F. SAIGEY, 

 2 e Ed. 2 vols. 8vo. in 1, hf. calf gilt (out of print), 5s 6d 1856-2 



4022 HITTER (Franz) ASTROLABIUM, das ist : Griindliche Beschreibung und Unterricht, wie solches 

 herrliche und hochniitzliche Astronomische Instrument, auff' allerley Polus Hoh, so vvol auch nach 

 eines jeden selbst gefalligen Gross auffgerissen, und verfertigt werden soil ; with engraved title, 

 numerous folding plates on copper, and woodcuts, cr. 4to. sewn (large and sound copy) ; RARE, 

 1. 105 Nilrnberg [1613] 



Unknown to Poggendorff, but mentioned by Graesse. 



4023 SPECULUM SOLIS, das ist : SONNEN-SPIEGEL, der kunststandiger, leichter und griindlicher 



Bericht von den SONNENUHREN, und was denselbigen angehoret ; nunrnehr mit dem DRITTEN 

 THEIL, allerhand NEUER ERFINDUNGEN vermehret durch einen Liebhaber dess Studii Mathe- 

 matici ; with engraved front., and numerous woodcuts, sm. 4to. seivn, 1. 7s Qd ibidem, 1652 



4024 - DASSELBE ; fine copy in old vellum, 1. 11s Qd 



VERY RARE, unknown to Poggendorff and Graesse. The original edition, comprising the first 2 parts only, appeared in 

 1609-11. The last part contains some curious conceits on sun-dials, including one sounding all hours by either exploding 

 a charge of gunpowder by means of a burning-glass, or by sound caused by steam generated by the same means ; also how 

 to make a sun-dial out of a sun-flower, etc. etc. 



4025 RITTER (Heinrich), et Ludwig PRELLER: HISTORIA PHILOSOPHISE GR^C^E : Testi- 

 monia Auctorum, Gr. et Lat. [cum Notis] ; Editio VII. [cum Indicibus], curantibus FR. SCHULTESS 

 et ED. WELLMANN, 8vo. buckram, 6s Qd (p. M. 11. nett) Gothce, 1888 



4026 RIVARD (Dominique Franqois,, Univ. Paris) ELEMENS de GEOMETRIE, avec ABREGE 

 d'ARiTHMETiQUE et d'ALGEBRE, 2 e Ed. augmented ; with plates, 4to. fine copy in old calf gilt, 

 with bookplate of Philip 2nd Earl Stanhope, F. R. S. , 5s 1738 



4027 RIVERS (INDUSTRIAL) of the UNITED KINGDOM, by various well-known EXPERTS, 21 plates, 

 Svo. cl., 2s Qd (p. 75 Qd) 1888 



4028 ROBB (Russell) ELECTRIC WIRING for the Use of ARCHITECTS, UNDERWRITERS, and the 

 Owners of Buildings, with 75 illustrations, sq. 8vo. cl. (out of print), 4s (p. 10s Qd nett) 



New York, 1896 



4029 ROBER/T (Henri) L'ART de CONNA!TRE les PENDULES et les MONTRES ; precede de 1'Art de 

 les conduire et re"gler, par FERDINAND BERTHOUD, 2 e Ed., augmentee ; with 4 steel plates, post 

 8vo. sewn, 4*- Qd 184& 



4030 ROBERTS (James, Inner Temple) The GRANT and VALIDITY of BRITISH PATENTS for INVEN- 

 TIONS, with woodcuts and diagrams, thick roy. 8vo. cl., 14s (p. 1. 5s nett) 1903 



4031 ROBERTS- AUSTEN (Sir William Chandler, F.R.S.) INTRODUCTION to the STUDY of METAL- 

 LURGY; 4th Ed., revised and enlarged, with numerous charts and illustrations, Svo. cl., 5s Qd 

 (p 15s) 1898 



4032 ROBERTSON (Abram, D.D., F.R.S., Savilian Prof. Geometry, Oxon.) ELEMENTS of CONIC SEC- 

 TIONS deduced from the CONE, and designed as an Introduction to the NEWTONIAN PHILOSOPHY, 

 15 folding plates, Svo. boards, uncut, 3s Qd . Clarendon Press, Oxford, 1818 



4033 - GEOMETRICAL TREATISE of CONIC SECTIONS, with Treatise on the Primary Properties of 

 Conchoids, the Cissoid, the Quadratrix, Cycloids, the Logarithmic Curve, and the Logarithmic, 

 Archimedean, and Hyperbolic Spirals, 28 folding plates, Svo. boards, uncut, or, hf. calf, Qs 



apud eandem, ibidem, 1802 



4034 SECTIONUM CONICARUM Libri VII ; accedit TRACTATUS de Sectionibus Conicis, et de 



Scriptoribus qui earum Doctrinam tradiderunt; with 45 folding plates, 4to. old calf, 10.9 ib., 1792 



4035 ANOTHER COPY, contemporary tree-calf gilt (fine copy), 12s Gd 



' His chief work, with an exhaustive survey of the history of the study.' D. N. B. 



4035*ROBERTSON (Frank, R.E., F.R.A.S.) ENGINEERING NOTES, Svo. hf. calf gilt (stamp on title) ; 

 out of print, 3s Qd (p. 12s Qd) 1873 



4036 ROBERTSON (John, F.R.S.) The ELEMENTS of NAVIGATION, containing the Theory and 

 Practice, with all the necessary Tables; with Treatise of MARINE FORTIFICATION, 7th Ed., with 

 Additions by LT. LAWRENCE GWYNNE, R.N., with numerous plates and diagrams, 2 vols. roy. Svo. 

 old sheep (one v. slightly damaged), 4s Qd 1805 



Last edition of the author's chief work, which went through 7 editions within the first 50 years of its publication. 



4037 TREATISE of such MATHEMATICAL INSTRUMENTS, as are usually put into a PORTABLE 



CASE, with Account of the Authors who have treated on the Proportional Compasses and Sector, 

 first edition, with 7 folding plates, Svo. hf. bound, 10s Qd 1747 



Bound up is : Description and Use of Hadley's Quadrant, with a new Additional Apparatus, and Demonstration of its 

 Theory, by William Jones, plate, 1795 ; also Catalogue of Optical, Mathematical, and Philosophical Instruments by 

 the same, with prices [1708]. 



According to Chasles, Robertson was the first to discover the theorem that in stereog hie projection the angla 

 between two circles of the sphere equals the angle between the two circles on projection. 



14 * 



