HENRY SOTHEKAN vV CO., 140, STRAND, W.C, and 37, PICCADILLY, Wi 01 



1801 Another Copy, new hf. brown calf gilt, \2s 



A work of well-known merit, including cliapters on Accumulators, and on Electrical Manipulation. The author was 

 awaitled the Koyal Society's Copley Medal for his researches on the laws of electricity of high tension, and the Bakerian prize, 

 fur his ' Inquiries concerning the Elementary Laws of Electricity'. 



1802 HARTING (Hans) t'ber algebraische und xumerische Berechnung der Mikroskop- 

 OHJKCTiVE geringer Apertur ; with diagrams, loy. 8vo. (pp. 32), sewn, \s Qd Wien, 1898 



1803 HARTLEY (F. W.) The Gas Analyst s Manual [including Photometry], woodcuts, post 

 8vo. d. {out of print), 3* Qd 1879 



1804 HARTNER (Friedrich), e Josef WAST LER : Manuale di Geodesia Inferiore ; Tia- 

 duzione italiana di Pa.sc^uale Fantasia; with 2 plates and numerous woodcufs, thick rov. 8vo. 

 hf. calf, OS Napoii, 1894 



1805 "HASELDEN (Thomas, Teacher of Mathematics in the Royal Navt/) The Seaman's 1»aily 

 Assistant : a Short, Easy, and Plain Method of Keeping a Journal at Sea, with Ifule.s 

 shewin<^ the Allowances for Leeway, Variation, Heave of the Sea, Set of Currents, etc., and TaMes 

 for the Seaman's L'se, sm. 4to. contemporary calf (a few pp. water-stained or inked) ; RARE, 15,s 1784 



Re<iuiring only the most elementary knowle<lge of arithmetic to be understooJ. 



1806 HASEOLL (W. Davis, c.E.) Railway Construction, witli Treatise on Takin*? Borint^s, etc. 

 et<'., BOTH series, with very numerous folding plates and woodcuts, 4 vols. imp]. 8vo. cl., 8s Qd 

 (p. £.-). \osC)d) ' [18G8]-4 



1807 HATCH (Frederick H.), and J. A. CHALMERS : The Gold Mines of the Hand : a Desciip. 

 tion of the Mining Industry of Witwatersrund, ivith 14 plates, 8^ smaller illustrations, and 1 folding 

 plans and maps, impl. 8vo. cl., 8s 6d (p. 17* nett) 1895 



1808 HATTON (Edward, Philomercat.) Arithmetick ; or, the Ground of Arts, originally composed 

 hy Dr. Record, and others, and now new Methodized, much Improved, and added a New 

 Tre.vtise of Decimals, Tables of Simple and Compound Interest, and the easiest Method of 

 E.\tractin«j: tlie St^UARE and CUBE-RooTS of Numbers, with fine portrait hy R. White, and dia- 

 grams, 4to. FINE copy in contemporary brown calf, blind-tooled sides {rare), £1. 1* 1699 



'The last edition otUf^covde'sGroHuihofArtrs I know of is that by Edw. Hatton, London, ICK'.t, 4lo. ; it lias an additional 

 book calle<l ' Decimals made easie '.' — Prof, de Morgan. 



1S09 Mathematical Manual : or, Delightful Associate, with diagrams, Svo. fine copy in 



contemporary calf, ivith bookplate of Philip 2nd Earl Stanhope, F.R.S., os i728 



Containing a chapter on ' Mysterious Curicsities in Numbers, or Numerical Novelties.' 



1810 HAUGHTON (Samuel, ;>;•., t.c.d. ; M.D., F.R.S.) Six Lectures on Physical (Geography, 

 illustrated, 8vo. cL, Qs (p. 12* iSd) Dublin, 1880 



* In physical geology Haughton studied the effects on the i>osition of the earth's axis of elevalioDs and depressions 

 caused by geological changes, with the resulting changes of climate. ... He tindertook a laborious series of calculations 

 on solar radiation, the object of which was to determine tlie eflects on terrestrial climat€S of alterations in the tempera* 

 ture of the sun and in the constitution of the atmosphere.'—/). N. B. 



IMl HAUKSBEE [the elder] (Francis, f.r.s.) Physico-Mechanical Experiments on Various 

 Subjects, containinj,^ an Account of the SURPRlziNii PHENOMENA touching LIGHT and Elec- 

 tricity, producible by the Attrition of Bodies, with many other Remarkable Appearances, not 

 l>efore observed, with the Explanations of all tlie Machines, and other Apparatus us'd in tho 

 Experiments, with 8 fine folding copperplates, cr. 4to. sound tall copy in contemporary panelled 

 m(/"(VERY RARE), with inscr. as below, £2. 2* 1709 



'Ex don(. D: D: M: Roberti Simsoni Prof: Math: [lt5S7-1708, editor of EuoUd and restorer of ApoUonins] h\ 

 ncademia Glasgouana'. — Inscr. onjliileaf. 



One of the most important early works on electricity, containing a description of the first elkctrical machink 

 (Invented by the author), consisting of 'a pretty large glass cylinder, turned by a winch and rubbed by the hand ', an 

 well as descriptions and illustrations of an improved air-pump of his invention, foun<lefl on his discovery of the ' lateral 

 communication of motion in air.' 



In his i)reface he mentions that ' the Nature and Ijiws of Electrical Attractions have not yet been much ccjusider'd by 

 Any'. In the above work and his contributions to the Royal Society lie carried further the tentative observations of 

 Dr. Gilbert and Boyle on electricity, and by his experiments may be said to have laid the fuumlation of that science. He 

 certainly was the first to discover the electric sjwrk. He also determined the relative weiglit of water and air, and was 

 the ti rst to use glass in the electrical n\achine. 



1812 HAUPT (Hermann; Gen. Manager P. R. R.) Military Bridges, with Su^'«,'estions of New 

 Expedients and Constructions for Crossing Streams and Chasms ; also Designs for Trestle and 

 Truss Bridges for Military Railroads, %oith 69 lithographs {many full-page), 8vo. hf. calf 

 {rubbed) ; out of print. Is 6rf (p. £1. 10*) New York, 1864 



A valuable work, the fruit of the author's exi»erience with tlie Northern Army during the Civil War. 



1813 Tunnelling by Machinery : Perforators and Plans of Operations in Mining and Tun- 

 neling of his Device, A folding plates, Svo. sewn, .3jf Qd Philadelphia, 1867 



1814 HAUSBBAND (E.) Die >\ irkungsweise der Rectificir- und Destillir-Apparate, mit 

 Hiilfe eiiifacher mathematischer Betrachtungen ; illustrated, Svo. .sewn, 2* 6</ (p. M. 6.) Berlin, 1893 



181.") HAXJVEL (Charles) Notice sur le Surchauffeur Differentiel, roy. 8vo. seicn {scarce), 6s 



Clermont {Oise), 1880 

 ISIG HAt^T (Bene Just, de VAcudimic ; Chanoine de Paris) Exposition Raisonnee de la 

 Theorie de I'Electricite et du Magnetisme, d'apres les Principes de M. .EPINUS, des Acade- 

 mies de Peterslx)urg, de Turin, etc.; with 4 plates, Svo. old leather, or, sewn, uncut, 8s Qd 1787 

 .Epints was the natural philosopher of Rostock ^1724-1602), one of the pioneers of Electro-magnetism, not the fanatical 

 colleague of Martin Luther. 



1817 -; Trait^ des Caracti-ires Physiques des Pierres Precieuses, pour servir a leur Deter- 

 mination lorsqu'elles ont H^ taillees; icith '6 plates, Svo. hf. calf {rare), \0s Qd 1817 



1818 Traite Elementaire de Physique; icith 24 plates, 2 vols. Svo. seivn, uncut, 58 1803 



1819 Elementary ^Treatise on Natural Philosophy, trans, by Olinthus [Gilbert] 



Gregory, LL.D., 24 copperplates, 2 vols. Svo. old hf. calf, uncut, Is Qd 1807 



7 * 



