HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, W. 737 



14731 SCHON (H. A. E. C. v., M.A.S.C.E.) HYDRO-ELECTRIC PRACTICE : a Practical Manual of the 

 Development of Water Power, its Conversion to Electric Energy, and its Distant Transmission, 

 with 3 charts, and 232 other illustrations, 4to. cl., 14s (p. 1. 5s nett) Philadelphia, 1908 



14732 SCHONER (Lazarus) De NUMERIS GEOMETRICIS. Of the NATURE and PROPERTIES of 

 GEOMETRICALL NUMBERS, now Englished, enlarged and illustrated with diuers and sundry Tables 

 and Obseruations concerning the Measuring of Plaines and Solids [by WILLIAM BEDWELL] : All 

 teaching the fabricke, demonstration and vse of a singular Instrument, or Rular, long since 

 inuented and perh'tted by THOMAS BEDWELL, with folding table of ' Trigonum Architectonicum, 

 or, the Carpenters Square ', sm. 4to. sewn (title somewhat soiled and headlines cut into, otherwise a 

 sound and clean copy] ; VERY RARE, 1. 10s Richard Field, 1614 



14733 ANOTHER'COPY, hf. calf (A LARGE AND VERY SOUND COPY), 1. 18s Qd 



' Nominally an enlarged translation of La/arus Schonerus's DeNumeris Geometricis, but in reality altogether rewritten, 

 with the practical object of explaining the use of the ' trigonicum ', or carpenter's square, and the ruler, or mechanical 

 contrivance for carpenters' computations, which had been invented by his uncle. This ' ruler ', or mesolabium architecton- 

 icum, had great value in Bedwell's eyes, and in the preface to his book in 1614 he expresses an intention to publish 

 something further on it.' D. N. B. 

 William Bedwell, the father of Arabic studies in England, was one of the Westminster Translators of the Bible. 



There is no copy of this work in the British Museum Catalogue of Early English Books. 



14734 SCHOOTEN (Frans van ; Univ. Leyden) EXERCITATIONUM MATHEMATICARUM Libri V : 

 I. Propositionum Arithmeticarum et Geometricarum Centuria. II. Constructio Problematum 

 Simplicium Geometricorum. III. Apollonii Pergsei Loca Plana restituta. IV. Organica 

 Conicarum Sectionum in Piano Descriptio. V. Sectiones Miscellaneae XXX, quibus accedit 

 CHRISTIANI HUGENII Tractatus, de RATIOCINIIS in ALE.E LUDO ; with numerous woodcuts and 

 diagrams, sm. 4to. old white vellum, 14s Lugd. Bat., ex off. Joh. Elsevirii, 1657 



14735 ANOTHER COPY, hf. calf (sound copy), 12s Qd 



' His chief work in which he applies the analytical geometry to the solution of many interesting and difficult problems ' 

 (Prof. Cajori), and 'recommended the use of coordinates in space of three dimensions' (W. W. R. Ball). It is further 

 valuable for the treatise by CHRISTIAAN HUYGENS, the first work printed on the theory of probabilities. 



The second book contains mainly a reprint of the Geometria Peregrinans, by an unknown Polish author, in which 

 surveying problems are solved by the use of the cross staff and chain alone. 



14736 De ORGANICA CONICARUM SECTIONUM in PLANO DESCRIPTIONS, cui subnexa est 



Appendix de CUBICARUM ^EQUATIONUM RESOLUTIONS ; with numerous woodcuts and diagrams, 

 sm. 4to. hf. bound, uncut, 10s 6d ibidem, ex. Off. Elzeviriorum, 1646 



Of great interest for the first chapter, ' De rectis lineis, quse in piano ex motu implicate describuntur ', in which the 

 author devises a method of drawing a straight line by means of a link and a triangular ruler. This is especially of im- 

 portance in connection with the alleged discovery of drawing straight lines by linkages by A. Peaucellier in 1864. See 

 No. 10054 ante. 



14737 SCHOBLEMMEB (Carl, F.R.S. ; Univ. Manchester) On the NORMAL PARAFFINS, Parts I III, 



3 parts 4to. (pp. 28), sewn, with author's inscr., 3s 6d 1872-80 

 14738 PART I ONLY, 4to. (pp. 13), sewn t WITH LONG 2-p. MANUSCRIPT BY THE AUTHOR ON 



THIS SUBJECT INSERTED, 3s Qd 1872 



14739 The RISE and DEVELOPMENT of ORGANIC CHEMISTRY ; revised Edition, edited [with 



Biographical Note and Bibliography], by ARTHUR SMITHELLS, F.R.S., with portrait, large cr. 8vo. 

 cl., uncut (scarce], 10s Qd 1894 



14740 SCHOTT (Kaspar, s.j., Univ. Wiirzburg) MAGIA UNIVERSALIS NATURE et ARTIS, sive 

 Recpndita Naturalium et Artificialium Rerum Scientia, cujus Ope per variam Applicationem 

 Activorum cum Passivis, admirandorum Effectuum Spectacula, abditarumque Inventionum 

 Miracula, ad varies Humanse Vitae Usus, eruuntur ; continet Pars I. Optica. II. Acoustica. 

 III. Mathematica. IV. Physica ; editio princeps, with engraved titles and numerous plates, 



4 vols. 4to. sound copy in contemporary calf gilt (FINE COPY) ; RARE, 2. 10s Herbipoli, 1657-9 



14741 ANOTHER COPY, 4 v., vv. I II in old calf, and v. Ill IV in old vellum (vv. Ill IV 



browned), 1. 15s 



14742 VOL. II ONLY ( ACOUSTICA), with engraved title and numerous plates; old vellum 



(browned), 5s ibidem, 1657 



' Get ouvrage est le meilleur expose des connaissances physiques au XVIIe siecle.' Biogr. Gen. 



It is the author's most important work, containing his valuable optical experiments, a good explanation of optical ana- 

 morphoses, and especially of the fata morgana, as well as giving rules for cylindrical and conical anamorphoses. 



'Mechanische Regeln zur Bewerkstelligung uberraschender, auf den ersten Blick nicht erklarlicher, oplischer Erschei- 

 nungen, mit vielen fiir die Geschichte der Optik wichtigen Bemerkungen machen den Hauptinhalt dieses bekannten Werkes 

 aus.' Wilde's GescUchte der Optik, where a full acount of the work will be found on pp. 296-306. It was reprinted, without 

 alterations, in 1677. 



14743 MECHANICA HYDRAULICO-PNEUMATICA, qua Aquei Element! Natura, Proprietas, Vis 



Motrix, atque Occultus cum Ae're Conflictus, kprimis Fundamentis demonstratur . . . Experimenta 

 Hydraulico-Pneumatica, Absoluta Machinarum Aqua et Ae're animandarum Ratio ac Methodus 

 . . . accessit EXPERIMENTUM NOVUM MAGDEBURGICUM, quo VACUUM alii stabilire, alii evertere 

 conantur, editio princeps ; with engraved title, numerous folding plates on copper, and woodcuts, 

 4to. sound copy in hf. brown calf gilt, uncut (RARE), 1. 10s ib., 1657 



This work is important as containing' the first account of the air-pump invented by OTTO v. GUERICKE, the author's 

 friend. 



' Reading in 1657, in Schott's Mechanica Hydraulico-pneumatica, of Guericke's invention of exhausting the air in a closed 

 vessel, ROBERT BOYLE set Robert Hooke to contrive a method less clumsy, and the result was the so-called mach-ina 

 Boyleana, completed towards 1659, and presenting all the essential qualities of the modern air-pump.' Miss Agnes M. Clerke. 



14744 PHYSICA CURIOSA, sive Mirabilia Naturae et Artis, quibus pleraque, quse de Angelis, 



Dsemonibus, Hominibus, Spectris, Energumenis, Monstris, Portentis, Animalibus, Meteoris, etc. 

 rara, arcana, curiosaque circumferunter, et ad Veritatis Trutinam expenduntur, editio princeps ; 

 with engraved title, and about 60 plates (some folding), 2 thick vols. 4to. contemporary calf, newly 

 rebacked (RARE), 1. 10s ib., 1662 



The book ' Mirabilia Meteorum ' (pp. 1387-1513) sums up contemporary knowledge on meteorology. One chapter 

 naively suggests that ' Augeli non sunt ordinarie causa efficiens ventorum.' 



