HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 205 



40o7*ROLAJ3 (Joannes de) Commentariorum in Astrolabium, quod Planisphterium vocant, 



Libri VI, nunc priiuiiin in Lucem editi ; additus est INDEX Capituiu et Heruni, qua* toto Opere 



contiuentur, locupleLissimus ; handsomely printed in italics ; with numerous Jiiu v?oodcuit, 4to. 



Jine copy in contemporary limp vellum {VERY RARK), £L 15* Lutetia^ lf5l 



Hou-zeau-Laiicaster No. 3276 ; it w*» however unknowo to Poggeiidorff and Bruuct. 



4058 BOLFE (William James; editor ' Popular Science Newt'), and J. A. QILLET: Elkmknts 

 of ASTRONOMV, 4th Ed., enlarged, with coloured spectrum plate, 17 star-maps, and woodcuts, post 

 8vo. cL, lis- New York [1868] 



4051) BOLLWYN (J. A. S.) AsTRONOMv Simplified for Genbral Reading, with nuroeroos new 

 ExplanationH and Discoveries in SPECTRUM ANALYSIS, etc. etc., 20 plates (many coloured), and 

 dingrams, 8vo c/ , As (p. 10* Qd) [1871] 



4060 ROMANO (Antonio Luigi de') Prospetto delle Conseoubnzb derivate alle Lagunk di 

 Vknkzia, ai Porti, ed alle Liinitrofe Provincie dope, la Diversione de' Fiuuii analisi e sviluppo della 

 Dottrina, roll' Applicazione al PoRTO di MalaMOOCO; with 2 folding plates, 2 voU. 8vo. hf. ea{f, 

 (jv G^/ . Venezm, 1815 



iOOl BOMB de I'ISLE (Jean Baptiste Louis) EssAl de CaiSTALLOGRAPlllE, on Description des 

 Figures LIeonidtri(iues, pronrcs ji <iiHerens Corps tlu Ue^jne Mineral, connus vulgaireroentaoos le nom 

 de Ckistaux ; with \ii folding plates, 8vo. contemporary French iHottUd calf atlt (RARE), \%a^ 1778 

 TliiH iiniturtaiit work Unit Uemoustnted Uie Uw uf coukUncy uf «pkIm in cryiiUJIaKrttihx. 



BOMEB (Olat) De Crassitik TunoRUM, et Experimbnta Projectionu> (jravium~«. 



PiCAKi) (.].), ante. 



4062 BONALDS (Edmund, Queen's Coll., Galway), and Thomas BICHABD80N: CHEMICAL 

 Technologv, incorporating a Revision of Dr. Knapp's 'Technology ', 2nd [lawtj Ed., Parts I 

 and 11 : Fuel and its APPLICATIONS, with 6 plates (2 coloured), and 433 tooodeuts, 2 vols. 8vo. cl,, 

 uncut, 6* Qd (p. £1. 16*) 1855 



* The book, which was recognised a* a standard work, has been incorporated bjr C. B. OrovM and W. Thors la tiMtr 

 Chemical Technology '.—D. N. Jt. 



Prof. Ronalds was a nephew of Sir Francis Ronalds, and though a Kranluate of OlaMen, Jena, Berlin, HaidatbaqL Mid 

 Paris, he was boycotte<l as a ' tradesman ' by the iavamU of E«linburKh when he resigned hia chair at Galway to tain obift 

 of the lioiuiin^jton Chemical Works. 



4063 BONALDS (Sir Francis, F.R.S. ; inventor, in 1816, of the electric telegraph) DESCRIPTIONS of an 

 Electrical Telegraph, and of some other Electrical Apparatus, withH plates (one folding) qfik$ 

 Installation and the Electrical Apparatus used, large 8vo. boards, uncut (VERY 8CAB0B), 

 £\.\UQd 1821 



4064 Another Copy, hf. calf, £1. 15* 



• Mrs. Edmd. Ronalds with Sir Fra« Ronalds's kind regards '.—/iwcr. on UUe. 

 4065 Another Copy, with photo portrait aet. 83 added ; boards, uncut (FRF^H COPY), £2. 2*, 



• T. 8. Whittem, Esq^. with the kind regards of Sir Fra». Ronalds*,— /luer. on titU. 



This work contains the account of the electric telegraph invented by the author, which transmitted aignaU frosi hto 

 house at Hammersmith (occupied later on by W illi am Morris, the poet, and known as ' Kelmscolt Honae '} over a ajataM 

 of wires 8 miles long, by observing at one end the divergence of a pair of pith balls when a cliarge of clrctriclty waa Mat 

 into the other. 



' Ronalds's instniment was of real practical use, and the brilliant idea of using aynehronously rotating dl*M, now 

 en-ployeJ in the Hughes printing apparatus, was entirely his own. The only defect in hi* invention wa» the cotuparaUv* 

 slowness with whir.h a succession of symbols could be transmitted '.—/>. N. Js. He at once offerr«l the inveoU oti to t lw 

 Admiralty, and was ollicially answeretl that now the French war was over telegrnphs of any kind w.re totally uumiOMMuy, 

 and that no other than the semaphore then in use would be adopted. The inventor publisheii the above aoeouat lu Vm, 

 and then dropiHjd telegraphy for good. 



4060 BONKETTI (John G. H., instrument maker) Treatise on a New Dry and Wet Bulb 



Hygrometer, for measuring the Force and Weight of A<iiieouH Vapour in the Atnio«pliere, and 



the Corresponding Degrees of Evaporation [with Formula and TableuJ, /ron/., 8vo. (pp. 15), tewm 



Isccivce) 75 6d !"•• 



The final form of the hygrometer— an improvementon Daniell's-which seema tobave been invented \*J Bonkaiti hltnMtf 



4067 BONTGEN (Wilhelm Konrad v.) Eine Neue Art von Strahlen, 2 paniphleU 8vo. mwm, 2s 



Wfirxburg, 1806 

 The first communication of the dlacorery of X raya. . ^ « 



40G3 BAY SOCIETY (American), Transactions of the, 1905, wtth plates and woodeuU, Srii, 



^l 4, J'hUaddphia, 1905 



40G9 BOOD (Ogden Nicholas, Columbia Univ.) Modern Chromatics, with Appli^tions u> Art 

 and IiKlustrv, 2nd Ed , with coloured front., and 130 illustrations, post 8vo. d., 2* M (p. 5*) 1883 



4070 BOOZEBOOM (H. W. Bakhuis, Amsterdam) Die heterogenen Gleichgewichte voni 

 Standpunkte der Phasenlehre; with 2 plates, and 203 other tllustrations, 2 vols. 8vo. sewn, 

 125 Gd(u M. 18.) BrauHsehwetg, 1901-4 



I VBALT :-I. Die Phasenlehre. Systeme aus elncr Komponente. If. Sysleme aua iwei KomponMitea 1. 1«IL 

 The author's investigations on the chemical theory of phaaenare of well known ImporUOM. 



4071 BOSCOE (Sir Henry Enfield, f.r.s.) Spectrum Analy.sis : Six Lectures Jffjwwf «»«•*/ 

 of Apothecaries of Lonclon, with Appendixes, 7 spectrum plates (2 coloured), and 73 woodcuts,9^ 



4072'''i^"second EomoN [inlarsedj. with 7 spectrum plates (2 coteicmO, and 94 woodcuts, Sro.d^ 



4073^^^ Third* EDiTiON*[greatly enlarj^e*!], with 10 spectrum and other plates (3 coloured), ^ndU 

 woodcuts, thick 8vo. cl. extra, t. e. g.. Is dd (p. £1. U) ,__,,„ ♦»,„ a«»i,«, .»A AnTutH 



4074 Fourth [l.vst] Edition, revised and considerably enlarged by the Author and ARTIIUE 



Schuster, f.r.s., with 6 plates (3 coloured), and 119 woodcuts, 8vo. cl. extra, t. e. 9 ^ \^ 

 (p. £1. \s) ^^^ 



4075 Another Copy, d., t. e. g. {wormed), 10* 



