396 HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 



7734 EXLEY (Thomas) Principles of Natural Philosophy: or a New Theory of Physics, 

 FOUNDED on Gravitation, and applied in explaining the general Properties of Matter, the 

 Phenomena of Chemistry, Electricity, Galvanism, Magnetism, and Electro-Magnetism, with 4 

 plates, 8vo. hoards, uncut. Is Qd 1829 



7735 EXTRA PHYSICS, and the Mystery of Creation : including a brief Examination of 

 Professor Tyndall's Admissions concerning the Human Soul, cr. 8vo. cL {o.p.), 3s (p. 6s) 1878 



7736 FABER Stapulensis [Gallice LEFEVRE d'ESTAPLES] (Jacobus ; mystic and translator 

 of the Bible) iNTRODUCTio^in Arithmeticam Divi Seuerini BoeTii pariter et Jordani 

 [Nemorarii] . Ars Supputadi tam per calculos 43 q notas arithmeticas suis quidem regulis 

 elegater expressa JUDOCI Clichtoui Neoportuensis. Questio hand indigna de Numeroru 

 et p digitos et p articulos finita Progressione ex Aurelio Augustino. Epitome Rerum 

 Geometricarum ex Geometrico introductorio Caroli Bouilli. De Quadratura Circuli 

 Demonstratio ex Campano [curante Joanne Cesario Juliacense] ; printed in got^jic Utter, 

 sm. 4to. hf. roan {some II. water-stained, hut a SOUND COPY) ; VERY RARE, £3. 3s 



s. I., a. aut. t. n. [ParisiiSy 1507] 

 • ijdition inconnue aux bibliographes. '—Graesse, who states that the work consists of 28 11., while the above copy lias 



32 (signatures A-D in sixes, and B-F in fours). The above edition was unknown to Brunet, Poggendorff, Professor de 



Morgan, the Biographie G6nerale, etc. 



' The Arithmetic of Boethius was the classical work of the middle ages . . . The second work, of arithmetical rules, 



shews the very low state of the art. It takes pages upon pages to explain the simple rules, though no examples are 



ventured on which have more than three figures. Montucla says that the quadrature of Bovillus was only saved from 



the laughter of geometers by its obscurity,' etc. etc. — Prof, de Morgan. 



7737 FABRE (Pierre Jean, m.d.) Propugnaculum Alchymi^e, ad versus quosdam Misochymicos, 

 Philosophos Umbratiles, Naturae Humanse Larvas, qui se Philosophos profitere audent . . . ubi 

 an sit Lapis Philosophorum, et qua Methodo, et Via ipsum Lapidem habuerunt Antiqui, 

 clarissime tractatur et authoritate, ratione, experientia probatur, ad versus Mysochymicos illos, ut 

 tandem resipiscant et Veritatem noscant ; with vignette on title, 12mo. sewn {sound and clean 

 copy) ; RARE, £1. Is Tolosce, P. Bosc, 1645 



' He believed in the transmutation of metals, but is not considered as an adept ... He defines the philosophical 

 stone as the seed out of which gold and silver are generated. It is three and yet one ; it may be found in all compounded 

 substances, and is formed of salt, mercury, and sulphur, which, however, are not to be confounded with the vulgar 

 substances so denominated '.—A. E. Waite. , 



7738 FABULET (Adolphe, pharmacien) NouvEAUX Eli&mens Th^orique et Pratique de Chimie, 

 Ouvrage par Demandes et R^ponses ; with folding tahle, 8vo. old hf calf, 5s An XI (1802) 



7739 FAHIE (J. J., m.i.e.e.) History of Wireless Telegraphy, 1838-99, including some Bare- 

 Wire Proposals for Subaqueous Telegraphs, with front, of portraits ^ and 66 illustrations., post 

 8vo. cL, with auto, letter from the author, 3s (p. 6s) 1899 



7740 FAHLBERG (Oonstantin) Saccharine, the New Sweet Product from Coal Tar, 8vo. (pp. 8), 

 sewn, 3s Qd 1887 



The account of the author's discovery of saccharin. 



7741 FAIRBATRN (Sir "William, f.r.s.) Account of the Construction of the Britannia and 

 Conway Tubular Bridges, with complete History of their Progress, from the Conception of 

 the Original Idea to the Conclusion of the elaborate Experiments which determined the exact 

 Form and Mode of Construction ultimately adopted, with 2{) folding plates and 75 woodcuts, roy. 

 8vo. hf. morocco {scarce), 12s Qd 1849 



Containing the account of the author's share in the building of the Menai Bridge undertaken by Robert Stephenson. 

 The ' History ' is especially valuable, and contains much autobiographical matter. 



7742 On the Application of Cast and Wrought Iron to Building Purposes ; 2nd Edition, 



greatly enlarged, with short Treatise on Wrought Iron Bridges, with 5 folding plates and 

 102 woodcuts, roy. 8vo. hf morocco {title stamped), 4tS 1857-8 



7743 Third Edition, greatly enlarged, unth folding lithographic view of Saltaire Mills, 



Bradford, 5 folding plates, and 118 woodcuts, 8vo. cl., 6s 1864 



7744 Fourth [last] Edition, with Additions, with lithographic view, 5 folding plates, and 



125 woodcuts, 8vo. cl. {0. p.), 8s Qd (p. 16s) 1870 



Containing the account of the author's important work in connexion with bridge-building (including the Britannia 

 and Conway Bridges), and especially of his invention of the rectangular wrought-iron structure without chains. It was, 

 according to the author's preface, 'one of the first— if not the very first — work which fallowed the experimental 

 researches on which these constructions were founded.' 



7745 Experimental Inquiry into the Strength, Elasticity, Ductility and other 



Properties of Steel manufactured by the Barrow Hematite Steel Co., Lanes., with front, of 

 the steel works, 8vo. cl., 3s Qd 1869 



7746 Experiments to determine the Effect of Impact, Vibratory Action, and Long- 

 continued Changes of Load on Wrought-Iron Girders, with 2 plates, 4to. (pp. 15), sewn, 

 2s 1864 



7747 Iron : its History, Properties, and Processes of Manufacture, first edition, with 



65 woodcuts, post 8vo. cl., 3s Qd Edin., 1861 



7748 Second Edition, revised and enlarged, with 74 woodcuts {including plates), 8vo. cl., 



5s6rf ^ V yi- '\-6.,1865 



7749 Third [last] Edition, revised and enlarged, with 84 woodcuts {including several plates), 



8vo. cl.{o. p.), 8s M ib., 1869 



Containing an interesting historical introduction, besides numerous tables on the strength and other mechanical 

 properties of cast and wrought iron and steel. 



7750 Treatise on Mills and Millwork ; 2nd Edition, unth folding plates and numerous 



woodcuts, 2 vols. 8vo. cl., 6s 1864-5 



7751 Fourth [last] Edition, unth 18 folding plates, and 336 woodcuts, thick 8vo. cl. {0. ».), 



12s Qd (p. £1. 5s) 1878 



