HENRY SOTHERAN & CO., 140, STRAND, W.C, and 37, PICCADILLY, W. 101 



1999 HORROCKS (Jeremiah ; Curate of Hoole, Lanes. ; first observer of the Transit of Venus) : 

 .lEREMLr. HoRROCCii, Liverpoliensis Angli, Opera Postiiuma; accedunt Guil. Crabtr-I^i, 

 Mancestriensis, Observationes Ccelestes ; JOH. Flamstedii de Teinporis .^^^cjuatione Diatriba ; 

 Numeii ad Liinje Theoriam Horroccianam ; JoH. Wallisii de Cometarum Distantiis; de Ratio- 

 num et Fractionum Reductione ; de Periodo Juliana ; with diagrams, thick cr. 4to. old c«//(very 

 bare), £1. 155 Londini, 1678 



Horrocks's short life is one of the most shining illustrations in the whole romance of science. Ho observed for the first 

 time, with a little half-crown telescope, on a Sunday afternoon, Nov. 24 (O. S.), 1639, a Transit of Venus, having first finished 

 his Evensong, 'ad majora avocatus quinob ha'C parerga [astronomica] negligi non decuit.' He di<;d next year, le40, in his 

 23rd year. 



' In the lunar theory he effected an improvement which would alone suffice to obtain for him an imperishable reputation. 

 His beautiful explanation of the inequality in the moon's longitude, termed the evection, by means of a libratory motion 

 of the apsides and a variable eccentricity, was the last great step made in the development of the laws of planetary 

 movement previous to the establishment of the theory of gravitation by Newton.'— iro/. R. Grant. 



2000 , Memoir of the Life and Labours of, with Translation of his celebrated Discourse on 



the Transit of Venus, by Arundell Blount Whatton, pr., diagrams and chart, post 8vo. cl. 

 (scarce), \()s 6d 1859 



The Vi-HHs in Soh vim, of which the above is a translation, was not included in tlic foregoing posthumous works, and 

 only saw the light by care of Hevelius at Danzig in 1(502. 



HORTEGA (Juan de)— v. Ortega, post. 



2001 HORTON (— , pr.. Schoolmaster at Hampton) ACCOUNT of the EARTHQUAKES at Leghorn in 

 Italy, Jan. 5-16, 1742, 8vo. (pp. 26). sewn, 4s 1750 



A careful account, with a poetical efl'usion in English and Italian at end. 



2002 HOSIER (John, Teacher of Navigation) The Mariner's Friend, or a Treatise on the Stars, 

 with Table of Stars, 12n)o. sewn, 2« 6f/ 1809 



2003 HOSPITALIER (ijdouard) The Modern Applications of Electricity, trans, and enlarged 

 by Juliu.s Maikr, 2nd [last] Ed., with many Additions, p/a<e5 and mimerous woodcuts, 2 vols. 

 Svo. <•/., 7.v6r/(p. £1.55) 1883 



2004 HOSTE (Paul, s.j., Prof Mathematics, Toulon) Course of Practical Mathematics, par- 

 ticularly adapted to the Gentlemen of the Army and Navy, trans, by William Webster, 3rd 

 Ed., corrected and improved by S. CLARKE, numerous plates, 2 vols. sm. 8vo. contemporary sheep, 

 6s 1769 



Vol. II includes Navigation, the Theory of Working a Ship, and a Glossary of Sea Terms. 



2005 HOSTUS (Mattheeus) De Numerations Emendata, veteribus Latinis et Gra^cis usitata ; 

 with device on title, 12mo. hf. calf neat (VERY RARE), £1. 10s Antverpia;, exoff. Christ. Flaniini, 1582 



a very rare work, unknown to Brunet, Graesse, Popgendorff", and other bibliographers. The only reference to it which 

 the advertisers have been able to trace is in Prof.de Morgan's Arithmetical B(.oks, who— although having seen no copy 

 himself— quotes it on the strength of Dr. Peacock's ' Hi-story of Arithmetic '. 



2006 HOUDAILLE (Capitaine) Sur une Methode d'EsSAi seientifique et pratique des Objectifs 

 Photographiques et des Instruments d' Optique; withjolding plate, and^l woodcuts, roy. 

 8vo. sewn, \s (ki 1894 



2007 HOtJEL (Jules) CouRS de Calcul Infinitesimal ; ivith diagrams, 4 vols. roy. Svo. sewn, 

 £i.7.v6r/(p. F. 50.) 1878-81 



2008 HOUGHTON (Thomas) Rara Avis in Terris: or the Compleat Miner, containing the 

 Liberties, Laws and Customs of the Lead-Mines, within the Wapentake of Wirksworth in 

 Derby.shire ; in 59 Articles, being all ever n«ade ; with the Art of Dialling and Levelling 

 Grooves ; and E.xplanation of the Miners Terms, woodcuts, 16mo. contemporary sheep [last I. 

 missing, and another torn, but a sound copy) ; RARE, 17* Qd 1681 



First Edition (unknown to Lowndes) of this curious work, which claims to contain the first account of ' Levelling 

 Giooves ; a thing greatly desired by all Miners ; being a subject never written on before by any.' 



' Houghton is valuable for the laws relating to mines, and his explanation of miners' terms, 'etc. '—Lojfndes. 



2009 HOUSTON (Edwin J.) Dictionary of Electrical Words, Terms, and Phrases, illustrated, 

 sq. cr. 8vo. (pp. 656), cl., 2s 6d (p. 10s 6d) New York, 1889 



2010 HOUZEAU (Jean Charles; Directeur de VOhservatoire de Bruxelles) Mj^thode pour 

 determiner simultani^:ment la Latitude, la Longitude, I'Heure et I'Azimut, pour des 

 Passages observes dans deu.\ Verticaux, 4to. (pp. 26), cL, Ss Qd [Bruxelles, 1853] 



2011 , et Albert LANCASTER, Bibliotycaire de cet Etablissement : Bibliographie Gen6- 



r.vle de I'Astronomie, on Catalogue m^thodiquedes Ouvrages, desM6moires, et des Observations 

 astronomic^ues publics depuis I'Urigine de I'lmprimerie jusqu'en 1880 ; ivith chart, 2 thick vols, 

 impl. Svo. in 3, sewn, WITH AUTHOR'S inscription [see below), £9. Bruxelles, 1887-9-2 



' A Monsieur Jenatzy, Chef de division au Ministere de I'Agriculture, hommage des autenrs. J. C. Hoizkau. A. Lan- 

 caster.' — Inscr. on title o/v. I. 1. 



The most imj>ortant bifiliogruphy on the subject, the 2nrf volume oj which is novf out of print and excessively fmrce. It 

 contains in Vol. I. 1. an interesting Intnxluction on the History of Astronomy by M. Houzeau (pp. 310), and a Bibliography 

 of Astrology : in Vol. I. 2 : Biographies et commerce epistolaire ; Ouvrages didactiques et generaux ; Astrononiie 

 spherique ; Astronomic theorique : in Vol. II : Memoires et Notices inserts dans les Collections academiques et les Revues. 



A projwsefi third part of vol I, and vol. Ill have never been published. 



2012 HOWARD (Luke, F.R.s.) Essay on the Modifications of Clouds, 8vo. cl. (scarce), 5s 1832 



' This essay gave him a scientific fame. It applies the methods of Linnseus to the varying forms of the clouds. The 

 author defines their three chief modifications, which he names Cin-us, Cumulus, and Stratus, and four intermediate or com- 

 l»ound modifications, the best known of which is the Nimbus or rain-cloud. These names have been generally adopted by 

 meteorologists'.— r/iojreas Hodgkin, D.C.L. 



2013 HUDSON (Ronald WiUiam Henry TumbiUl) Rummer's Quartic Surface, with front, 

 and diagrams, 8vo. cl., 5s 6d (sells 8s nett) Uyiiv. Press,, Cambridge, 1905 



The author had a brilliant mathematical career and became a Fellow of fit. Jotm'a t6ll., Cantab;,* ftutidicd from rock- 

 climbing in Wales in his 29th year io 1904. *.,•"';,'/ 



