HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W 23 



431 BLANCOUBT (Handiequer de) The ART of GLASS, shewing how to make all Sorts of Glass, 

 Crystal and Enamel ; the Making of Pearls, Precious Stones, China and Looking-Glasses ; with 

 the Method of Painting on Glass and Enameling, etc. etc.; containing many SECRETS and 

 CURIOSITIES NEVER BEFORE DISCOVERED, now first trans, into English, with Appendix, containing 

 Exact Instructions for making GLASS-EYES of all Colours, copperplates, 8vo. old panelled calf 

 (RARE), 2. 2s 1699 



An early and valuable treatise on the subject, especially for the recipes for colouring glass. The secret of making 

 glass eyes was here first made public. 



432 BLAND (Miles, D.D., F.R.S.) ALGEBRAICAL PROBLEMS, producing Simple and Quadratic 

 Equations, with their Solutions, 8th Ed., with Appendix, containing Problems on the Nature and 

 Solution of Equations of Higher Dimensions, 8vo. boards, 3s Qd 1841 



433 NINTH [LAST] EDITION [with additional Chapter on the Solution of Indeterminate 



Equations and Problems] : KEY to the Work 2 vols. 8vo. boards, 8s Qd (p. 195 Qd) 1849-36 



434 _ _ GEOMETRICAL PROBLEMS arranged and solved, with Appendix containing the Elements of 

 Plane Trigonometry, 3rd Ed., diagrams, boards ; or, hf. calf, 3s Cambridge, 1827 



435 - FOURTH [LAST] EDITION, 'diagrams, 8vo. boards, 4s Qd (p. 10s Qd) 1842 

 436 PROBLEMS in the DIFFERENT BRANCHES of PHILOSOPHY [Trigonometrical, Physical, and 



Astronomical] , 8vo. cl., 4s 1830 



437 BLANKEN (H. van) ESSAI sur la RESOLUTION des EQUATIONS, 4to. (pp. 16j, sewn, 2s 



Zwolle, 1839 



438 BLOCK (Eugen) HILFSTAFELN zur BERECHNUNG der PoLARLS-AziMUTE, zunachst mit 

 Riicksicht auf die Zeitbestimmung im Verticale des Polarsterns, large 4to. cl., 2s Qd 



St. Petersburg, 1875 



439 BLOUNT (Bertram) PRACTICAL ELECTRO-CHEMISTRY, 2nd Ed., revised to date, 69 woodcuts, 

 8vo. cl., 10s Qd (sells 15s nett) 1906 



440 BLOXAM (Charles London) CHEMISTRY, INORGANIC and ORGANIC, with Experiments, and a 

 Comparison of Equivalent and Molecular Formula}, 278 woodcuts, thick 8vo. cL, 2s Qd 1867 



441 _ FIFTH EDITION, with 292 woodcuts, 8vo. cl., 5s (p. 18s) 1883 



442 - NINTH [LAST] EDITION, rewritten and revised by JOHN MILLAR THOMSON, F.R.S. , and 

 ARTHUR G. BLOXAM, 284 woodcuts, thick 8vo. cl., 13s Qd (p. 18s nett) 1903 



443 LABORATORY TEACHING, or Progressive Exercises in Practical Chemistry, 5t'i Ed. , post 



8vo. c/.,2s (p. 5s Qd) 1886 



444 BOCKLER (Greorg- Andreas) THEATRUM MACHINARUM NOVUM, exhibens Aquarlas, Alatas, 

 Jumentarias, Manuarias ; Pedibus, ac Ponderibus Versailles, Plures, et diversas Molas ; ex 

 Germania in Latinum translatum opera HENRICI SCHMITZ ; with engraved title and 153 large plates, 

 folio, old parchment (wanting plate 133) ; RARE, 1. Is Colonial Agr., 1662 



A very curious work indispensable to the historian of engineering, illustrating every variety of Mills, Waterworks, 

 Pumps, etc., from the earliest time to the period of its publication. 



445 BODE (Johann Elert) SAMMLUNG ASTRONOMISCHER ABHANDLUNGEN, BEOBACHTUNGEN, und 

 NACHRICHTEN (Supplement-Band I-III zu dessen astronomischen Jahrbiichern) ; with 3 copper- 

 plates, 3 vols. 8vo. in 1, boards, Qs Qd Berlin, 1793-7 



Bode was the discoverer of the law called after him, on the arithmetical relation subsisting between the distances of 

 the planets from the sun. 



446 BOERHAAVE (Herman) ELEMENTA CHEMLE, Editio altera, Leydenensi multo correctior et 

 accuratior, cui etiam accessere ejusdem OPUSCULA OMNI A quae hactenus in lucern prodierunt ; ea 

 quidem prius sparsim edita, mine verb in unum collecta atque digesta ; with 17 copperplates, 

 2 vols. 4to. sound copy in old calf gilt, 15s Parisiis, 1733 



447 ANOTHER COPY, old calf, newly and neatly rebacked, 17s Qd 



BEST EDITION, with copious indexes, ' Orationes Academicae VIII ', and some other works on Pharmacology. 

 'Intended to contain all the important work done in chemistry, which long remained by far the best guide to the 

 study of the science. . . He studied the processes involved in calcination, and to him is due the valuable experimental 

 contradiction of the view put forth by Boyle and others.' Prof. E. v. Meyer. 



448 , LIFE and WRITINGS of, with Appendix [by WILLIAM BURTON, M.D.], with portrait (fine 



impression), am. 8vo. old calf gilt, with Lord Boston's bookplate, 5s 1743 



449 SECOND EDITION, with portrait, 8vo. old calf (joints weak), with the Earl of Harrowbifs 



bookplate, 5s 1746 



Still the fullest biography of the great physician and chemist. The appendix contains some of his less known works, 

 and a bibliography. 



450 BOHN (0.) tiber LINSENZUSAMMENSTELLUNGEN und ihren Ersatz durch eine Linse von 

 vernachlassigbarer Dicke, 8vo., sewn, Is Qd Leipzig, 1880 



451 BOHNE (Johann; Stadtphysicus zu Leipzig] DISSERTATIONES CHYMICO-PHYSIC^E, CVymiee 

 Finem, INSTRUMENTA et OPERATIONES frequentiores explicantes, cum Indice ; accessit Tractatus 

 de Aeris in Sublunaria Influxu, sm. 4to. sewn (rare), 12s Qd Lipsm, 1685 



A collection of 15 academical theses, chiefly on subjects connected with physical Chemistry, and interesting as 

 showing the state of the science at the time. 



452 BOHUN (Ralph; New Coll. Oxon.) DISCOURSE concerning the ORIGINE and PROPERTIES of 

 WIND, with an Historical Account of Hurricanes, and other Tempestuous Winds, with 3 engravings 

 on copper, 12mo. contemporary calf (name and inscr. on title, but large sound copy), VERY 

 RARE, 1. 15s Oxford, 1671 



A very rare work, not noticed by Lowr.des, and the earliest English treatise on the subject. The author argues 

 chiefly on the Aristotelian basis, but adds some startling arguments of 'his own. 



453 BOIS (H. du) The MAGNETIC CIRCUIT in THEORY and PRACTICE, trans, by EDMUND ATKINSON, 

 94 woodcuts, 8vo. cl., 5s (p. 12s nett) 1896 



454 BOIS-AYME ( du) et BIGEON : MEMOIRE sur les DEVELOPPEES des GOURDES PLANES ; 

 with plate, 4to. (pp. 50), sewn, 2s Qd 1829 



