45S HENKY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 



9063 HA.YES (Charles ; Sub-Gwernor oj the Boy. African Co.) Treatise of Fluxions: or, Intro- 

 duction to Mathematical Philosophy, containing a full Explication of that Method by which the 

 most celebrated Geometers of the present Age have made such vast Advances in Mechanical 

 Philosophy, numerous diagrams, folio, old calf, roughly rebacked (rare), 155 1704 



' The first English work explaining Xevvtoa's method of infinitesimals. After an introduction setting forth most of the 

 chief properties of the conic sections with concise proofs, Hayes applies Newton's method clearly and systematically, first 

 to obtain the tangents of curves, then their areas, and lastly the problems of maxima and minimi. His preface shows a 

 good acquaintance with the existing literature of higher mathematics.'— D. N. B. 



9061 HAYMAN (E. N., Common Brewer) Practical Treatise to render the Art of Brewing 

 more easy, with the Use of the Saccharometer, and Instructions for the Purchase of Malt and 

 Hops ; also, particular Directions for the Management of the Brewery, etc., with folding plate, 

 12mo. hoards, uncut, Qs Qd 1819 



9062 HAYWABD (Joseph) On the Science of Agriculture : comprising a Commentary on and 

 Comparative Investigation of the Agricultural Chemistry of [Richard] Kirwan and Sir 

 Humphry Davy, etc., 8vo. hf cl., uncut, 5s 1825 



9063 Another Copy, hf roan gilt, 5s 6d 



' Showing a very sound scientific judgment in all practical points.' — Donaldson. 



9064 HAYWABD (Robert Baldwin, f.r.s.) The Algebra of Coplanar Vectors and Trigono- 

 metry, with numerous diagrams, or. 8vo. cl., 4:s6d (p. 8s 6d) 1892 



' An attempt to supply the place of the Trigonometry and Double Algebra of De Morgan.' — Preface. 



9065 HEAFORD (A. S.) Strains on Braced Iron Arches and Arched Iron Bridges, illustrated 

 graphicallv, with 7 folding plates, 8vo. cl., 3s (p. 6s) 1883 



9086 HEARN (Charles W.) The Practical Printer: a Complete Manual of Photographic 

 Printing : the Styles and Processes of Plain and Albumen Paper Printing, and of Printing on 

 Pt)rcelain, with fine photographic portrait, and 51 woodcuts, 8vo. cl., 6s Philadelphia, 1874 



9067 HEAT in its Mechanical Applications: Lectures at the Institution of Civil Engineers^ 

 1883-4, u)ith 4: folding plates and 53 diagrams, 8vo. hf. calf neat, 8s Qd 1885 



9068 Another Copy, sewn, 7s 



The lectures were by Osborne Reynolds, f.r.s. (General Theory of Thermo-Dynamics), W. Anderson, E. A. Cowpor, H. C. 

 Fleeming Jenkin, f.r.s. (Gas- and Caloric-Engines), A. C. Kirk, and Sir Andrew Noble, f.r.s. (Heat-Action of Explosives). 



9069 HEATH (Robert) Astronomia Accurata ; or the Royal Astronomer and Navigator ; 

 containing New Improvements in Astronomy, Chronology, and Navigation, particularly 

 New and correct Solar and Lunar Tables, with Precepts and Examples of their Use, according 

 to Old or New Style, with vignette and diagrams, roy. 4to., Large Paper ; old calf {Joints 

 broken), 6.? apud auctorem, 1760 



9070 HEATH (Robert Samuel ; V.-P. Univ. Birmingham) Treatise on Geometrical Optics, 

 with numerous diagrams, 8vo. cl., 4* 6c? (p. 12s Qd) Univ. Press, Cambridge, 1887 



The standard work on the subject, of which it includes a bibliography of memoirs and treatises. 



9071 Elementary Treatise on Geometrical Optics, 2nd [latest] Edition, with diagrams, 



or. 8vo. cl., 35 a. e., ib., 1897 



9072 HEATH (Thomas Edward) Our Stellar Universe : a Road-Book to the Stars, with 

 8 plates, cr. 4to. cl., Ss (p. 5* nett) 1905 



9073 HEATHER (J. F., r.m.a., Woolwich) Mathematical Instruments, 3rd Ed. : Lardner 

 (Dionysius, pr., f.r.s.) The Steam Engine, 4th Edition: Glynn (Joseph, f.r.s.) The 

 Construction of Cranes and Machinery, 2nd Edition: Gibbons (David) The Law of 

 Contracts— 4 vols. 12mo. in 1, copiously illustrated; hf. morocco neat, Ss 6d 1849-56 



9074 HEAVISIDE (Oliver ; f.r.s.) Electrical Papers, with diagrams, 2 vols, large 8vo. cl. (very 

 scarce), £2. 155 1892 



A collection of the author's voluminous and important papers, originally issued in the Electrician, on Electromagnetic 

 Waves and Surface Conduction, Telegraphy, the Theory of the Telephone, etc. etc. 



9075 Electromagnetic Theory, Vol. I, with diagrams, 8vo. cl., 6? 6d (p. 12* 6d) 1893 



Containing Outline of the Electromagnetic Connections ; the Elements of Vectorial Algebra and Analysis ; Theory of 

 Plane Electromagnetic Waves. t 



9076 HEBERDEN Jr. (William, m.d., f.r.s.) Of the Influence of Cold on the Health of the 

 Inhabitants of London, 4to. (pp. 6), sewn, 2s 1796. 



9077 HEBERT (Alexandre) La Technique des Rayons X : Manuel Operatoire de la Radiographie 

 et de la Fluoroscopie ; with 16 plates (10 folding), 8vo. cl., 2s 6d (p. F. 5 nett) 1897 



9078 HEBERT (Luke, c.E.) Practical Treatise on Rail-Roads and Locomotive Engines, 

 in which the Mechanical Construction of Edge, Tram, Suspension, and all other Railways, and 

 the various Locomotive Carriages, designed for Rail and Common Roads, are described in 

 Chronological Order, etc., with Explanation of every Patent hitherto granted in England for 

 Improvements in the Mechanism of Locomotion, with lithographic folding front., and over 200 

 woodcuts, 8vo. sewn, uncut (scarce), IQs 6d 1837 



9079 Another Copy, hf. cl. (front, foxed), 15s 



The front, represents the 'Railway Gallery under the Canal near Holsden (? Harlesden) Green '—probably the 

 complicated crossing of the Great Western Railway, high-road, and Regent's Canal near Wormwood Scrubbs, lately 

 destroyed for the widening of the line. 



9080 [H^BRARD (Pierre)] Caminologie, ou Traite des Cheminees, contenant des Observations 

 sur les diff^rentes Causes qui font fumer les Cheminees, avec des Moyens pour corriger ce 

 D^faut ; unth 21 copperplates, large 12mo. nice copy in old French mottled calf gilt, I2s Dijon, 1756 



Containing a preliminary chapter, ' Dissertation sur les Cheminees des Anciens' (pp. 22). The work was unknown to 

 Querard, Brunet, and others. 



9081 HEDDLE (Matthew Forster, m.d., f.r.s.e., Univ. St. Andrews) The Mineralogy of Scot- 

 land, edited [with Memoir], by J. G. Goodchild, with portrait, 117 plates, 30 text-illustrations, 

 and map, 2 vols. roy. 8vo. cl., 12s (p. £1. 16* nett) Edin., 1901 



