HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 301 



5900 BAOCI (Andrea) De Thermis Libri VII, in quibiis agitur de Universa Aquarum Natura, 

 deque Difterentiis omnibus, ac MiSTiONinus cum Terris, cum Ignibus, cum Metallis ; de Lacubus, 

 Fontibus, Fluminibus ; de Balneis totius Orbis et de Methmlo medendi per Balneas, etc. etc., 

 editio princeps; with plan, folio, old Italian vellum {some II. stained) ; rare, £1. 1*. 



Venetiis, V. Valgrisius, 1571 

 ' Belle edition d'un ouvrage estira^.'— Brunrf. 'Omrrage fort eaiAme.'—Gmesse. The de Gaignat copy of this edition 

 fetchefl F. 100, the La Vallitie F. M, and the Libri £2. 4*- in 1851), 



5901 BACHET de M^ZIRIAO (Claude Gaspard, s.j.) Problembs Plaisants et D^lectables, 

 qui se font par les NoMiiRES ; 5« Ed., revue, 8implifi<5e, et augment<Se par A. Labosne, 8vo. sewn, 

 3« 1884 



' Containing an interesting collection of arithmetical tricks and questions.'— If. IT. R. Bull. 

 V. DlOPHANTUS, post. 



5902 BACHHOFFNER (George Henry) Popular Treatise on Voltaic Electeicity and 

 ElectroMacnetism, with folding plate, 8vo. (p 35), sewn, 3«6rf 1838 



Thf author was the inventor of several electrical apparatus described in the above pamphlet. 



5903 BACHMANN (Paul, Univ. Breslau) Die ANALYTISCHE Zahlentheorie, 8vo. teum, with 

 auto, of Prof. H. W. LI. Tanner, F.RS., Is 6rf (p. M. 12) Leipzig, 1894 



5901 Die Elemente der Zahlentheorie, 8vo. sewn, is (p. M. 6.40) ibidem, 1892 



' He investigated the arithmetical fonnula which gives the automorphics of a ternary quadratic Xonn.'—Prqf. Cajori. 



5905 Die Lehre von der Kreistheiluno and ihre Be/iehungen zur Zahlentheorie, 8vo. 



sewn, 4* (p. M. 7) i6., 1872 



'A standard work.'— Pro/. O^jori. 



5906 BACKLUND (Johann Oskar; PiUkotoa Observatory) t)l>er die Beweouno einer gewiaaea 

 Grupi>e der Kleinen Planeten, 4to. (pp. 54), seum, 2* St. Petersbourg, 1892 



lOOT Calculs et Recherches snr la (JoMfeTE d'ENCKE. I : Tables pour le Calcul de rAnonialie 



Eccentrique, roy. 4to. sewn, 2s ib., 1892 



5908 Zur Entwickelung der Storungsfunction, impl. 4to. (pp. 33), sewn. Is 6d ib., 1884 



5909 Zur Theorie des Encke'schen Cometen, impl. 4to. (pp. 84), sewn, 2s 6d ib., 1881 



5910 BACON (Sir Francis, Viscount St. Alban) Historia Naturalis et EjcperimentaliH de 

 Vkntis, etc. ; with engraved title, 24mo. old vellum, \0s 6d Amstelodanii, ex Off". Elzeviriana, 1662 



5911 : The Naturall and Experimentall History of Winds, &c. Written in I^tine by 



the Right Honorable Francis Lo : Verulam, Viscount St. Alban, translated by R. G. Gent., first 

 edition, 18mo. old calf, rebacked {portrait toanting and some corners water-stained) ; VERY RARE, 

 £2. 15* Humphrey Moseley, 1663 



Although Bacon's theory of windfl is still based on the Aristotelian conceptions, the work is important a« ooUectiDfr all 

 the facts and theories then known on the subject, and especially a8 the first to point out the deflexion of winda caoaed by 

 the earth's rotation. 



CJopies of the above edition fetched at auction £8. 15« in 1909, and £9. 10.« in 1902. 



5912 BACON (John Mackenzie, pr.). The Record of an Aeronaut, being the Life of, by his 

 Daughter Gertrude, with photogravure portrait and 62 illustrations on 40 plates, 8vo. d., 9* 

 (p 16* nett) 1907 



Valuable for the numerous photographs taken trova a ballix>n. 



5913 BACON (Roger, O.M.; 'Doctor Mirabilis') Opus Majus ad Clementem IV. Pontificem Maxi- 

 mum, primum a Samuele Jebb, M.D., Londini editum MDCCXXXIII, nunc vero diligenter 

 recusnm ; accedit Prologus Galeatus in reliqua Opera ejusdem Autoris ; with 2 folding plates, 

 folio, boards, uncut {blank bottom margins slightly stained, otherwise a REMARKABLY FRKSH AND 

 WHOLLY uncut COPY); very rare, £3. 10* Venetiis, Franc. Pittervs, 1750 



' liifiniment rare'.— Grn^*e. It is a reprint of the Ixmdon edition of this, the gre»t«>Bt noientific and philoaophical 

 work of the Middle Agea : 'at once the Encyclopeedia and the Organon of the Tliirteenth Century ' ; and preferable to it 

 as containing the Prologvt Galeatvs, which is not included in Ihf former. It contains, i.a., De Centria Graviam : De 

 Ponderibus : De Valore Musices : De Arte Experimentali : De Radiis Solaribus : De Coloribua per Artem Pirndia: De 

 Visione Reflexa et Fracta : De Scientia PersiK-ctiva, etc. etc. Tlie preface contains valuable biographical infonnatioa. 



'It sumniarized what was then known in physical science, and laid down the priDCiple« on which it, t* well aa pbilo- 

 so]>by and literature, should be studied. lie stated as the fundamental principle that the atody of natural acience must 



rest solely on cxjteriment ; and in the fourth part he explained in detail how astronumy and phjraic^ 

 ultimately on mathematics, and progress only when their nuidamental princinles are expre 

 MathPiiiatlcs, he says, should be regarded as the alphabet of all philosophy."— IT. W. R. lUtU. 



V.t Friar Bacon, the greatest illustration of the Middle Ages, wan held up by his Univeniity a« a quack exhibiting hi« 

 Brazt'ii Head at the OxfoH Pageant of a few years ago. 



5914 BADEN-POWELL (Major Baden F. S., f r.a.s.) Practical Aerodynamics, and the 

 Theory of the Aeroplane: Principles evolved by Past Experiment, Part I, toith IplaUt, and 

 diagrams, Svo. cl. boards, 2s 6d [1909] 



5915 BAGAY (Valentin) Nouvelles Tables Astronomiques et Hydrooraphiques, contenaDt 

 un Traite abreg6 des Cercles de la Sphbre ; la Descnption des Instruments h. Reflexion ; diverees 

 Mdthodes pour obtenir les Latitudes et les Longituties terrestres; une nouvelle Table de Log- 

 arithmes, des Sinus, etc. etc. de Seconde en Seconde, pour les 90<'du quart duCercle; with 5, 



plates, 4to. (pp. 832), calf gilt (VERY SCARCE), £2. 2s Didot, 1829 



'ComDUt«!r8have always preferred Bagay's NovrtlU* Tnhh* llS^ 



'Comput«!r8have always preferred Bagay's NmjvtlU* Tnhh* (182fl), which also contain a complete logarithmic canon to 

 every second. The change in the column is very clearly marked by a large black nuclcua, aurrounded by a circle, printed 

 in.stead of zero. Bagay's work has now bea>me very rare.'— J. W. />. Glahher, F.JLS. 



5916 [BAIF latine] BAYFIUS (Lazare de; French ambassador to Venice) Annotationks in 

 Legem II. de Captivis, et postliminio reversis, in quibus tractatur de Re Navali, per Auctorem 

 recognita? ; ejusdem Annotatt. in Tractatum de Auro et Argento legato, etc. etc. ; item Antonii 

 Thylesii de Coloribus Libellus, etc. ; with large woodcuts of galleys etc. ascribed to Geoffroy 

 Tory, sm. 4to. old vellum {some comers inked, otherwise a large and sound copy) ; RARE, £1. 10* 



[col. :] BasUeas, Hier. Frobenius et liic. Episcopius, 1541 

 ' 11 est bien iniprime et contient de belles arravures sur bois,'— Brtinrt. Tlie work by Antonio Teleaio ia of importance aa 

 one of the first attacks on the Aristotelian basis of physics. 



21 



