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



10767 LEUPOLD (Jacob) Theatrum Machinarum, mit Supplement und Hauptregister ; a 

 complete set as below; with 538 copperplates, 15 vols. roy. folio in 5, russia extra, joints (fine 

 set) ; rare, £8. 8* Leipzig, 1724 — Dresden, 1802 



Inhalt:— I. Theatrum Machinarum Generale, Oder Schauplatz des Grundes mechanischer Wissenschaften, 1724: 

 II. T. M. Hydrotechnicarum, oder Schauplatz der Wasserbaukunst, 74: III. T. M. llydraulicarum, oder Schauplatz der 

 Wasserkiinste, 2 v., '90-74 : IV. T. M., oder Schauplatz der Hebzeuge, '74 : V. T. Static! Universalis (Gewichtkunst und 

 Wagen ; Wissenschaft und Instrumente zum Wasserwiigen ; Abwiegung der Luft ; Wasser- oder Horizontal-Waagen), 4 v., 

 '74: YI. T. Pontificiale, oder Schauplatz der Briicken und des Briickenbaues, 74; VII. T. Arithmeticum et Geometricum, 

 Oder Schauplatz der Rechen- und Messkunst, 74 : VIII. Supplement und Hauptregister zum ganzen Werke von J. E. 

 ScHEFFLER, '74: IX. T. M. Molarum, oder Schauplatz der Miihlenbaukunst von J. M. Bayer, J. Born und J. K. 

 Weinhold, 3 v., '88-1802. 



'On trouve rarementces 9 volumes reunis et complets.' — Graesse. 



The most complete work on engineering published till then. The author first described here a quantity of ingenious or 

 useful machinery, e.g., the pedometer. He considered perpetual motion a possibility, and describes a number of such 

 machines, of which a full account is given in Mr. Dircks's Perpetuum MoMle. 



10768 Theatrum Machinarum Hydraulicarum, oder: Schau-Platz der Wasserkiinste, 



bestehend in einer vollkommenen Beschreibung und Unterricht meist aller erfundenen Machinen 

 die Wasser dadurch in die Hohe zu treiben, oder aus der Tiefe zu erheben ; with 117 fine copper- 

 plates, 2 vols, folio in 1, old hf. calf (back damaged), £1. 10^ Leipzig, 1724 



10769 Theatrum Machinarum Hydrotechnicarum : Schau-Platz der Wasser-Bau-Kunst, 



oder: Deutlicher Unterricht und Anweisung desjenigen, was bey dem Wasser-Bau, und 

 absonderlieh der Damm-Kunst, zu wissen nothig ist ; with 51 copperplates, folio, old calf, 

 £1. Is ibidem, 1724 



10770 [LEURECHON (Jean, s.j. ; ' Henri van Etten ')1 Recreations Mathematiques, 

 composees de plusieurs Problemes plaisans et facetieux d'Arithmetique, Geometrie, Astrologie, 

 Optique, Perspective, Mechanique, Chymie, et d'autres rares et curieux Secrets : plusieurs 

 desquels n'ont iamais este imprimez. La troisiesrae Partie, contient un Recueil de plusieurs 

 gentilles et recreatives inuentions de feux d' artifice : La maniere de faire toutes Sortes de 

 Fuzees, simples et composees ; with numerous curious tvoodcuts, 12mo. old limp vellum {some II. 

 water-stained, otherwise a FINE COPY) ; RARE, £1. 10s Rouen, Charles Osmont, 1630, or '34 



10771 [NOUVELLK Edition] ; with the numerous woodcuts B,K-Bl^GRAYED,\2mo. old calf {foxed, 



bottom of title torn off and back of binding damaged), £1. Is Lyon, J. B. de Ville [1656] 



Neither of the above editions was known to Brunet or Graesse, who mention however others of Rouen, 1629, and 

 Lyon, 1680. A copy of the former was in M. Libri's Collection, who mentions in his Sale Catalogue : ' This work contains 

 very curious problems, viz., 'Comment on pent charger un canon sans poudre' (by steam or heated air), and several 

 arithmetical questions '. 



10772 [ ] Mathematicall Recreations, or a Collection of many Problemes, extracted out of 



the Ancient and Modern Philosophers, as Secrets, and Experiments in Arithmetick, Geometry, 

 Cosmographie, Horologiographie, Astronomic, Navigation, Musick, Opticks, Architecture, 

 Statick, Mechanicks, Chemistrie, Water-works, Fireworks, etc. Not vulgarly manifest till now. 

 Written first in Greek and Latin, lately compil'd in French, by Henry Van Etten, and now 

 in English, with the Examinations and Augmentations of divers Modern Mathematicians. 

 Whereunto is added the Description and Use of the Generall Horologicall Ring : and the 

 Double Horizontall Diall, invented and written by William Oughtred, with curiously 

 engraved title, and numerous engravings on copper, 2 vols. 12mo. in 1, old calf, rebacked {printed 

 front, slightly defective and mounted, and some 11. torn or scribbled on) ; RARE, £1. 10.? 



William Leake, 1653-2 



10773 Another Copy, old sheep {printed title missing), £1. 10s 



10774 New Edition, with sharp impressions of the engraved title and the numerous copper- 

 engravings, 2 vols. 12mo. in 1, sound copy in contemporary calf {VERY RARE), £2. 2* 



apud eundem, 1674 



The third and last English edition, and the rarest of all, being unknown to Lowndes, Watt, and AUibone. The im- 

 pressions of the engravings (of which the plates were either retouched or reengraved) are unusually clear. 



The work is a highly interesting storehouse (once of great popularity, and now rare in all its editions) of a multitude of 

 mathematical, astronomical, and physical problems. It was based on the work of Baciiet de Meziriac (v. Nos. 204 and 

 5901, ante), and included, besides numerous original problems by the author, some taken from Cardan ; and in its turn 

 formed the foundation of the works of Mydorgue, Ozanam, Montucla, and Hutton. 



Among the more interesting problems are, besides the one mentioned above by M. Libri : * How to make an instrument 

 that helpes to heare ' (the speaking tube, the invention of which is ascribed to Sir Samuel Morlaud in 1671), 'a lampe 

 which goeth not out, though one carries it in one's pocket', several magnetical problems, including 'a secrecie in the 

 Magnes, for discovering things farre remote ', ' of the Tliermometer ', ' how to weigh the lightnesse of the ayre ', * of longi- 

 tude and latitude ', 'how to make a clocke with one wheele', 'how to mike a perpetuall motion', etc. etc. etc. 



10775 LE VERRIER (TJrbain Jean Joseph.; f.r.s., discoverer of Neptune) Recherches sur 

 I'Orbite de Mercure et sur ses Perturbations. Determination de la Masse de Venus et du 

 Diamfetre du Soleil, 4to. (pp. 87), sewn, 3s Qd 1843 



10776 Recherches sur les Mouvements de la Planete Herschel (dite Uranus), roy. 8vo. 



(pp. 254), sewn, 8s 6d [1846] 



a collection of the four memoirs on the parturbations of Uranus which led to the discovery of Neptune, with a fifth 

 part added: *Est-il possible de deduire des Observations d'Uranus la Position du Plan de I'Orbite de la Planete 

 Troublante ? ' 



The discovery of Neptune by calculation and its immeliate veriflcatioa by the telescope is one of the romances of 

 astronomy. Le Verrier achieved the former, and communicated its exact position to Dr. Galle at Berlin, who at once 

 observed it. It had two results for Le Verrier of an unusual kind for a scientist : Louis Philippe at once made him tutor 

 to the Comte de Paris, and the Department of the Manche elected him willy-nilly to the Legislative Assembly. 



10777 LEVESCIUE (John, Anchor Brewery, St. Lukes) The Art of Brewing and Fermenting, 

 and Making Malt, exhibited in Essays and Decimal Tables, with Description of the Author's 

 newly -in vented Thermometer ; 4th Edition, with Abstract of the ACT to Allow the Use of 

 Sugar in the Brewing of Beer, by Giles H.\ll, with folding front., 8vo. cL, 4* 1847 



This edition refers to the leave then first granted by the Eicise to use sugar in brewing. 



