756 HENRY SOTHERAN & CO., 140, STRAND, W.C, and 43, PICCADILLY, W. 



15067 STEVENSON (Robert, f.r.s.e. ; father of Alan, David, and Thomas Stevenson, and grand- 

 father of B. L. S.) Account of the Bell Rock Light-House, including the Details of the 

 Erection and Peculiar Structure of that Edifice ; with a [_sic] Historical View of the Institution 

 and Progress of the Northern Light-Houses, with fine frontispiece after Turner {on India paper), 

 and 21 copperplates, roy. 4to. hf roan, uncut, with visiting card of George Rennie, F.R.S., and 

 presentation inscr. to him from the Commissioners of the Northern Light-Houses (scarce), £1. 55 

 <p. £5. 55) Edin., 1824 



'The most important of his light-houses was the famous Bell Rock tower, erected on a dangerous cliff submerged by 

 every tide to the depth of twelve feet. . . . Previous attempts [after the Abbot of Aberbrothock's bell had been sunk by 

 Ralph the Rover] made by Capt. Brodie to erect beacons upon it had failed, . . . The tower rises to a height of 100 ft. ; 

 the diameter of the base is 42 ft., diminishing to 15 ft. at the top. . . . The cubic contents cf the tower are more than 

 double those of the Eddystone, from which it differs in many respects owing to its far more difficult and dangerous site. 

 . . . The optical apparatus consisted of parabolic reflectors of silvered copper, combined with argand burners, arranged 

 on a four-sided frame, the best and most complete apparatus then known ; and, as a means of further distinguishing the 

 light, it showed red and white alternately, hence Sir Walter Scott's * ruddy gem of changeful light '.'— D. N. B. 



15068 Observations on the Alveus or General Bed of the German Ocean and British 



Channel, 4to. (pp. 7), unbound, with author's inscr., and addressed, to George Rennie, F.R.S., 

 is ' [1816] 



' His ' Alveus of the German Ocean ' is frequently quoted by geologists.' — D. N. B. 



15069 Report relative to a Line of Canal on One Level between the Cities of Edinburgh 



and Glasgow, to form a Junction with the Forth and Clyde Canal at Lock No. 20, and also wdth 

 the Port of Leith, and the Brooraielaw at Glasgow, with folding map, 4to. (pp. 36), seivn, 45 



Edin., 1817 



15070 Roads and Highways : communicated to the Editor of the Edinburgh Encyclopjedia, 



loith plate, 4to. (pp. 12), seion, 35 Qd ibidem, 1824 



' He proposed to use stone tracks as a ' smooth and durable city road '.'— D. Stevenson. 



15071 : Stevenson (David, f.r.s.e.) Life of Robert Stevenson, with bust portrait, 12 plates, 



and 20 looodcuts, 4to. cl., 65 (p. £1. I5) ib., 1878 



15072 : Memorial of the Commissioners appointed by Act of Parliament for Erecting 



Lighthouses in the Northern Parts of Gt. Britain, relative to the Erection of a Lighthouse 

 on the [Inch] Cape or Bell Rock, 8vo. (pp. 57), sewn, 35 Qd ib., 1806 



15073 STEVENSON (Thomas, m.i.c.e., f.r.s.e. ; father of Robert Lows ^S^^evewsow) The Design and 

 Construction of Harbours, with \Q plates and 32 woodcuts, 8vo. cl., luith author's inscr., 45 



Edin., 1864 



15074 Another Copy; with: Calver (Edward Killwick, r.n.) The Conservation and 



Improvement of Tidal Rivers, considered principally with Reference to their Tidal and Fluvial 

 Powers, with 28 woodcuts and coloured folding plan — 2 vols. 8vo. in 1, hf calf [rubbed), Is M 



ibidem, 1864— London, 1853 

 A reprint, with many additions, of the article ' Harbours ' in the eighth edition of the Encyclopedia Britannica. 



15075 Lighthouse Illumination: a Description of the Holophotal System, and of 



Azinauthal-Condensing, and Apparent Lights, with other Improvements, with 4 plates, and 

 53 woodcuts, 8vo. boards, with author's inscr., 7s 6d 1859 



' His crowning invention was his ' azimuthal condensing system of lighthouse illumination.' No attempt had previously 

 been made to allocate the auxiliary light in proportion to the varying lengths of the different ranges and the amplitudes 

 •of the ares to be illuminated, or, where a light had to show all round the horizon, to weaken its intensity in one arc, and 

 with the rays so abstracted to strengthen some other arc, which from its range being longer required to be of greater 

 power." — D. N. B. 



A possible hindrance to German success in world-domination may exist in a certain limitation in the national mentality, 

 which while allowing to the Statebound scientist much success in poisoning and other arts of destruction, has not tended to the 

 development in one family of such brilliant gifts in the arts of peace and the realm of the imagination as those with which mankind 

 was endowed in eighty years from Robert to P^bert Louis Stevenson. 



15076 STEVINUS (Simon, de Bruges) CEuvres Mathematiques, oii sont inser^es les Memoires 

 Mathematiques ; le tout reveu, corrige, et augmente par Albert Girard ; with numerous 

 woodcuts and diagrams, large folio, contemporary white vellum (rare), £2. IO5 



Leyde, B. et A. Elsevier, 1634 

 The most complete edition of the author's works, containing : Arithmetique ; Algebre de Diophante d'Alexandrie ; 



Pratique d' Arithmetique, contenant les Tables d'Interest, la Disme, et un Traicte" des Incommesurables Grandeurs ; 



Cosmographie (Doctrine des Triangles, Geographic, Astronomie) ; Practique de Geometrie ; Art Ponderaire ou Statique ; 



Optique ; Castram^tation ; Fortification par Escluses ; Fortification. 



' II a employe dans ces recherches des artifices mathematiques qu'on pent consid^rer comme un premier achemineraent 



vers le calcul infinitesimal, et donne un des raeilleurs traites de navigation, qui a servi de texte dans toutes les ecoleschez 



les nations maritimes.' — Van de Wcyer. 



15077 Hypomnemata Mathematica, e Belgico in Latinum h Wil[lebrordo] Sn [ellio] 



conversa ; with woodcuts and numerous diagrams, 3 vols, folio in 1, old limp white vellum (sound 

 copy) ; RARE, £2. 25 ib., J. Patius, 1608 



The first collected edition of the author's works, including : Doctrinaj Triangulorum de Sinuum Canonibus Fabricandis ; 

 de Triangulis Planis ; de Sphsericis Triangulis ; Libri VI Geographiie (Canones Loxodromici, de Histiodromia, de Theoria 

 Maritimorum ^Estuuni, etc.) ; de Coeli Motu. 



15078 Problematum Geometricorum Libri V, editio princeps, with vignette on title and 



numerous diagrams, 4to. old half binding [somewhat waterstained) ; extremely rare, £2. IO5 



Antverpice, Joa. Bellerus [1583] 



This work, which had never been reprinted, was unknown to Poggendorff, Brunet, and other bibliographers. 



Prof. M. Cantor (Forlesungen ub. Gesch. d. Math., Bd. II p. 528), who mentions 'die bei der an Unauffindbarkeit 



grenzenden Seltenheit ' of the original editions, was also unable to see the above work. A description of it is given by 



M. Steichen (y.iVo. 15083 in/ro), who complains that 'ilest deplorable de voir I'histoire des sciences rester muette encore 



une fois sur ce beau travail.' 



15079 : Steichen (Michel) Memoire sur la Vie et les Travaux de Simon Stevin; with 5 



folding plates, 8vo. boards (back damaged), os Bruxelles, 1846 



