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



5539 WYLD (Samuel) The Pracitcal [sic] Surveyor, or the Art of Land-Measuring made Easy, 

 showing how to Survey any Piece of Land whatsoever, hy the Plain-Table, Theodolite, or Circum- 

 ferentor, or, hy the Chain only, likewise an easy Method of Protracting Observations made with 

 the Meridian, etc. etc., and Appendix, shewing how to Draw Buildings, etc. in Perspective, of 

 Levelling, and how to Measure standing Timber, 6th Ed., enlarged by a Careful Hand, with 

 folding plates, sm. 8vo. old sheep {binding wormed), 7s Hd 1769 



5540 XIMENES (Leonardo, s.J.) Dissertazione intorno alle Osservazioni Solstiziali del 1775 

 alio Gnomone della Metropolitana Fiorentina ; with folding plate on copper, 4to. contemporary 

 Italian hf. calf, 8s Qd Livorno, Yli^ 



' L'auteur y donne quelques corrections a son traite Dd veccMo gnomone, et trouve que la diminution seculaire de 

 I'obliquite de I'ecliptique est d'environ 35", et non 50", ainsi que le supposaient la plupart des astronomes.'— iJiogr. Gen. 



5541 Ristretto deir Osservazione dell' Eclissi Solare del di 17. Ottobre 1781, fatta in 



Luogo detto Mezzomonte, 4to. (pp. 16), sewn, 4s Firenze, 1781 



5542 Del Vecchio e Nuovo Gnomone Fiorentino, e delle Osservazioni Astronomiche, Fisiche, 



ed Architettoniche fatte nel verificarne la Costruzione Libri IV, a quali premettesi una Intro- 

 duzione Istorica sopra la Coltura dell' Astronomia in Toscana ; with numerous copperplates 

 {some folding), thick 4to.^w6 copy in hf. vellum, uncut, 14s ibidem. Stamp. Imper., 1757 



' Contenant une foule d 'observations curieuses sur I'astrononiie, la physique et I'architecture. '—£iog?\ Gen. 



5543 YARNALL (M., u.s.N.) Catalogue of [10658] Stars observed at the U.S. Naval Observa- 

 tory [Washington], 1845-77, 2nd Ed., revised, 4to. sevm, 6s Qd Washington, 187S 



5544 Another Copy ; with Catalogue of 1963 Stars, reduced to 1850.o, with Catalogue 



of 290 Double Stars, the whole from Observations at Santiago, Chili, during 1850-2, by the U.S. 

 Naval Astronomical Expedition to the Southern Hemisphere, by Lt. James M. Qilliss — 2 vols. 

 4to. in 1, hf. morocco gilt, 12s 6c? ibidem, 1878-70 



5545 YATES (James, f.r.s.) Remarks on the Formation of Alluvial Deposites [sicl, with 2 

 folding plates, 8vo. (pp. 41), sewn, 2s Qd [1831] 



5546 Textrinum antiquorum : an Account of the Art of Weaving among the Ancients, 



Part I (all pub.), on the Raw Materials, with Appendix on the Period of the Invention of 

 Linen Paper, on Felting, on Netting, on Pliny's Natural History, and on the Onomasticon of 

 Julius Pollux, with 16 plates (3 hand-coloured), and woodcuts, 8vo. cl. {scarce), 10s 6c? 1843 



' Illustrating the minuteness and accuracy of his research ; with valuable appendixes.' — D. N. B. 



YOLLAND (CoL William, r.e., f.r.s.) Geodesy— v. Mathematics (Nos. 2891-2), ante. 



5547 YOUNG- (Charles Augustus, Prof Astronomy, Princeton Univ.) The SuN, with front, and 

 numerous woodcuts, cr. 8vo. cl., 2s 6c? (p. 5s) 1882 or '3 



5548 Text-Book of General Astronomy for Colleges and Scientific Schools, with front, and 



233 illustrations, 8vo. hf. roan {back damaged), 4s Boston [Mass.], 1889 



5549 Reprint, with front, and 233 illustrations, 8vo. hf. roan, 5s (p. 12s Qd) ib., 1893 



5550 Revised [latest] Edition, with front, and 246 illustrations, 8vo. hf. roan, Is Qd 



(p. 12s 6rf) ib., 1899 



One of the best general textbooks. 



5551 YOUNG- (Charles Frederick T., c.E.) The Economy of Steam Power on Common Roads, 

 with its History and Practice in Gt. Britain ; and its Progress in the United States, hy Alex. L. 

 HOLLEY, c.E., and J. K. Fisher, with plates, and numerous woodcuts, post 8vo. hf morocco gilt, 

 4s [1860] 



5552 Fires, Fire Engines, and Fire Brigades, with History of Manual and Steam Fire 



Engines, their Construction, Use, and Management, /oZrfm^ p/a<e and plan {linen-mounted), and 

 numerous full-page and other woodcuts, 8vo. hf. calf gilt {nice copy), 8s 6c^ (p. £1. 4s in cl.) 1866 



Published in the year in which the Metropolitan Fire iirigade came into being, as a result of the great tire in Tooley St., 

 and valuable for the history on the subject which it contains. 



5553 YOUNG (David) Observations upon Fire, with a View to the best and most expeditious 

 Methods of Extinguishing it, upon a New Plan, with or without Water, post 8vo. (pp. 48), 

 hf. brown calf extra, t. e. g. {rare), 8s 6c? Edin., 1784 



This pamphlet, containing a number of interesting suggestions, was unknown to Watt, AUibone, and Lowndes. 



5554 YOUNG (Jacob William Albert, Chicago Univ.), and C. E. LINEBARGEB : The Ele- 

 ments of the Differential and Integral Calculus, based on ' Kurzgefasstes Lehrbuch u. s. w. 

 von W. Nernst und A. Schonflies ', with diagrams, 8vo. cl., 6s (p. 10s %d) 1900 



5555 YOUNG (John Radford, Belfast College) Course of Elementary Mathematics, illustrated, 

 thick 8vo. cl., 3s 1861 or '2 



5556 Another Copy, in 2 vols. hf. calf gilt, 4s 1861 



5557 Elementary Treatise on Algebra, Theoretical and Practical, with Appendix on 



Probabilities and Life Annuities, enlarged Ed., fcap. 8vo. cl., 2s 6d 1844 



5558 Elements of the Differential Calculus, enlarged Ed., diagrams, fcap. 8vo. cl., 3s 1836 



5559 Elements of the Integral Calculus, diagrams, fcap. 8vo. cl., 3s 1831 



5560 Elements of Geometry, with Notes, diagrams, 8vo. cl., 2s 6d 1833 



5561 Elements of Plane and Spherical Trigonometry, with its Applications to Naviga- 

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 Davies, f.r.a.s. ; revised and corrected by J. D. Williams; new Ed., diagrams: Mathemat- 

 ical Tables — 2 vols. 8vo. in 1, cl. {cover stained), 3s 6d Philadelphia, 1835-3 



5562 On the General Principles of Analysis : a Series of Original Investigations, Pt. I (all 



pub.) : the Analysis of Numerical Equations, 8vo. (pp. 64), sewn {scarce), 3s 6c^ 1850 



5563 On the Imaginary Roots of Numerical Equations ; with Investigation and Proof of 



Newton's Rule, 8vo. (pp. 42), sewn, 2s Qd 1868 



