<J4 HENRY 80THERAN & CO., 140, STRAND, W.O., AKt) 37, PlCCADtLLY, VV. 



1862 HEMMING (George Wirgman, q c.) Elementary Treatise on the Differential and 

 Integral Calculus, diagrams, 8vo. boards, 3s Cambridge, 1848 



1863 Second [last] Edition, with Additions, diagrams, Svo. d., 5s ib., 1852 



Based on the method of limits. 



1864 HENDERSON (John) Practical Electricity and Magnetism, with 159 woodcuts, cr. 8vo. 

 cL, 35 (p. 65 Qd) 1898 



1865 HENNELL (Henry, Chemical Operator, Apothecaries' Hall) On the Mutual Action of Sul- 

 phuric Acid and Alcohol, and on the Nature of the Process by which Ether is formed (Philos. 

 Trans.), 4to. (pp. 9), sewn, with author's inscription [scarce), 8* 60? 1828 



This important memoir first made known the synthetic formation of alcohol from olefiant gas and sulphuric acid— a 

 process made use of by Berthclot in 1S55 to make alcohol from coal gas. 



The author, -whuse biography is unaccountably excluded from D. N. B., ■was blown up in 1842 by one of the bombs prepared 

 by himself for use in the Afghan War. 



1866 HENRION (Denis) Memoires Mathematiques recueillis et dressez en faveur de la Noblesse 

 Francoise. lei" Volume, auquel est traitte de I'Arithmelique Militaire, Construction des 

 Tablp:s des Sinus, Touciiantp:s et Couppantes ; Doctrine des Triangles Rectilignes ; 

 Pratique du Compas de Proportion, etc. etc. ; with numerous diagrams, 12mo. old calf, with 

 bookplate of Philip -2nd Earl Stanhope, F.R.S. (rare), £1. 1* 1613 



First Edition of tlie author's first printed work. Vol. II was published in 1027, and a second edition of the above 

 volume in 1023. 



1867 : Les RECREATIONS Mathematiques avec I'Examen de ses Problemes en Arithmetique, 



Geometrie, Mechanique, Cjsmographie, Optique, Catoptrique, etc. Premierement reueu par 

 D. Henrion. Depuis par M. Mydorge. Et tout nouvellement corrige et augmente, 5^ Edition ; 

 with numerous woodcuts, 12mo. old sheep {binding slightly damaged). Vis Qd 1659 



1868 L' Usage du Compas de Proportion, nouveliement revft, et augmente d'une seconde 



Partie ; loith plate, woodcuts and diagrams, 12mo. old sheep gilt {one I. mended, othei'ivise a sound 

 copy), with bookplate of Philip 2nd Earl Stanhope, F.R.S. , \2s Rouen, 1680 



1869 HENRY (James), and Karel J. HORA: Modern Electricity : a Practical Working Ency- 

 clopedia and Manual, 2 folding diagrams and 160 illustrations, sq. cr. 8vo. cl., 3s (p. 5s nett) 1905 



1870 HENRY (Lucien) Traite de Geodesie Tacheometrique, son Application au Trace des 

 Chemins de Fer, au Leve des Parcellaires et du Cadastre : Theorie et Application des Coordonnees 

 Polaires et leur Conversion en Coordonnees Rectangiilaires, 8vo., Mith Atlas, containing Z() folding 

 plates, roy. 4to.— 2 vols, hf roan, 85 [1895] 



1871 HENRY (William, m.d., f.r.s.) Elements of Experimental Chemistry, 9th Ed., with all 

 the recent Discoveries, \Q plates by Lowry, and diagrams, 2 vols. 8vo, hf. calf {nice copy), 5s 1823 



The author was one of the most cultivated members of Manchester scientific society of his time (1774-1836). His 

 doctoral thesis ' De Acido Urico et Morbis a nimia ejus Secretione ortis' should endear his memory to the polite world 

 of our unreticent age. 



1872 HENWOOD (William Jory, f.r.s.) The Metalliferous Deposits of Cornwall and Devon, 

 with Appendixes on Subterranean Temjjerature, the Electricity of Rocks and Veins, the Quantities 

 of Water in the Cornish Mines, and Mining StSithticH, 12 plates and 11^ tables, mostly folding, 

 very thick 8vo, boards, uncut. Ids (p. £2. 2s) Penzance, 1843 



'The name HonroodUe has been bestowed in his honour on a hydrous phosphate of aluminium and copper.' — IJ. X. B. 



1873 HERMANN (Jakob) Phoronomia, sive do Viribus et Motibus Corporum Solidorum et 

 Fluidorum ; with engraved title byWandelaar,and \2folding plates, 4to. old calf, 12s Qd Amst.,\l\i) 



The author's most imi)ortaut work, in which he mentions an improved form of Anion ton's air thermometer, which is not 

 effected by changes in the pressure of the air. He was a disciple of Jacques liernoulli, and preceded Euler as professor of 

 mathematics at 8t Petersburg,'. 



1874 HERO Alexandrinus : Geometricorum et Stereometricorum Reliv^ui-E ; accedunt Didymi 

 Alexandrini Mensune Marmorum et Anonymi Varia3 Collectiones ex Herone, Euclide, Geniino, 

 Proclo.Anatolioaliisque ; eLibh. MSS.ed.FRlDERlcUsHuLTSCH,l8vo.sei^n,5.v (p.M.8.) Berolini, 1864 



1875 Spiritalium Liber, a Frederico Commanding ex Gra3co, nuperinLatinum con versus ; 



tvith numerous laoodcitts, sm. 4to. old white vellum (a very tall and fine copy), £1. 55 Urbini, \bl5 



1876 Another Copy, hf calf [a few II. slightly stained, otherwise a sound and tall copy), £1. \s 



First Edition of the first printed work of Hero of Alexandria, 'containing descriptions of about 100 small machines and 



mechanical toys, many of which are very in^^enious, including an account of a small stationary steam-engine, which is of 



the form now known as Avery's patent. . . . There is also an account of a double forcing pump lobe used as a fire engine. 



... It is only recently that general attention has been directed to his discoveries, though Arago had alluded to them in 



his elo(]e on Watt.'— ir. W. R. Ball. 



1877 De gli Automati, overo Machine se Moventi Libri II, tradotti dal Greco da Bernard- 

 ino Baldi, Abbate di Guastalla, nuovamente ristampato et riccoretto ; with engraved title, and 

 numerous fine engravings on copper and wood, sm. 4to. old Italian vellum {a few II. slightly water- 

 stained, otherwise a sound and tall copy) ; rare, 15s Venetia, 1601 



a translation of the Avro/xara, different from the first mentioned work, known as Wvevixari-Ka, and like it containing 

 descriptions of machines and mechanical contrivances. The above edition is remarkable for the fine engravings it 

 contains. 



, et HERO Ctesibius —v. Mathematici Veteres, post. 



1878 : Martin (Theodore Henri) Recherches sur la Vie et les Ouvrages d'HERON d'ALEX- 



ANDRIE, et sur tous les Ouvrages Mathematiques Grecs, conserves ou perdus, publics ou inddits, 

 qui ont 6te attribues h, un Auteur nomme H^ron, 4to. (pp. 488), seivn, Is Qd Impr. Lmp6riale, 1S54 



1879 HERSCHEL (Caroline [Lucretia]), Memoir and Correspondence of, by Mrs. John 

 Herschel ; 2nd Ed., icith 2 fine steel portraits {Miss Herschel, oit. 92, and Sir William Herschcl), 

 and plate of the iOfoot Telescope, large post Svo. cl. {scarce), lOs Qd 1879 



The only biography of one of the most extraordinary characters in the history of science. Arrived in England to take 

 over the household of her brother, she spent her time between household duties and ' sweei)ing ' the heavens, resulting in 

 lier discovery of S comets between 17SC. and 1797. For her Catalogn*^ of /nti.'s of Sir W. Herschel's J^tar Clusters and 

 Ncbulif she received thi» Gold Medal of the Astronomical Societv. 



