€86 HENRY SOTHEKAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, W. 



18695 PROCLUS DIODOOHUS, Philosophus Platonicns: Hypotyposis Astronomicarum Posi- 

 tion um [Graice, Cura S. Gryn.^i] ; with diagrams {side margin of title cut off), Basilicc, Joa. 

 Vualder, 1540 ; NICOMACHI Gerasini Arithmetics Libri duo, Greece, nunc primimi Typis 

 excusi, Porisiis, Christ. Wechel, 1538: Astrologica [Gr. et Lat.. edita Cura J. Camerarii], 

 Norimherga;, Jo. Petreius, 1532 — 3 vols. sm. 4to. in 1, old English calf (broken), with auto, of 

 Floyer Sijdenham {translator of Plato, 1710-87) ; rare, £2. 15s ' 1532-40 



The above copy belonged to the bad M. Libri, and is described in his Sale Catalogue of 1S61 (Xo. 6010) as ' With MS. 

 notes copied from MSS. in New College, Oxford, and in the possession of Sir George Wheler [D.D., oriental traveller, lo50- 

 1723]. This valuable copy has the autograph signature of Floyer Sydenham, the learned translator of Plato, and the 

 MS. notes, containing chietty various readings and Greek Scholia, are also in his handwriting.' 



The Arithmetic of Nicomachus formed the basis of thac of Boethius, and 'remained for a thousand years a standard 

 authority on the subject.' ' It was the first exhaustive work in which arithmetic was treated quite independently of 

 geometry. Instead of drawing lines, like Euclid, he illustrates things by real numbers' (Prof. Cajori). 



The Astrologica consists of the following works : Circulus Solaris : De Judiciis, sive Significationibus XII Locorum 

 Orbis Signiferi : Decreta Planetaru in singulis Locis Zodiaci, cum Libello de Natura Planetarum : Medicationes accommo- 

 datfe ad Astrologise Rationem : Vestii Valentis Excerpta. 



13696 : Sphaerae atque ASTRORUM CCELESTIUM RATIO, Natura, et MOTUS: ad totius 



Mundi Fabricationis Cognitione Fundamenta [i.e. Proclus : de Spliera, Gr. et Lat. : Josephus 

 Zieglerus: de Solid.e Sphere Constructione ; Hemicyclium Berosi ; Aratus : Ph.eno- 

 MENA, cum Commentariis Theonis, Gr. ; Planisphaerium Ptolemsei et Jordani] ; with title 

 within fine woodcut border, woodcut initials, and numerous diagrams, sm. 4to. old hf. calf {title 

 mounted, and a number of II. water-stained on lower margin, othervnse a SOUND copy); rare, 

 £1. 10* [Basileca], Valderus, 1536 



First Edition. ' Proclus n'etait pas seulement metayjhysicien : il avait des connaissances etendues en niathematiques 

 et particulierement en astronomie, c.onime I'atteste son Traite de la sphere. . . . Toutes les divisions de la sphere celeste 

 y sont exposees avecautant de clarte que dans nos meilleurs traites d'astronomie.'— Dr. F. Hoefer {Biogr. Gen.). 



13697 PROCTOR (Bernard S.) Some Remarks upon Light : a Paper read before the Microscopical 

 Society of Newcastle-on-Tyne, 8vo. (pp. 20), sewn, Is 6d Newcastle-on-Tyne, 1862 



13698 PROCTOR (Richard Anthony, f.r.a.s.) Half-Hours with the Telescope, 12th Edition, 

 with 7 plates and 15 woodcuts, 12nio. cL, \s 6c/ 1896 



Perhaps the author's most popular book. 



13699 Light Science for Leisure Hours [First Series], 4th Edition, post 8vo. cl., 3* 



(p. Is 6rf) 1880 



13700 Second Series, with 7 woodcuts, post 8vo. cl. {cover stained), 2s 6rf (p. 7* 6rf) 1873 



13701 Second Edition, with 7 woodcuts, post 8vo. cl., 3* 1882 



13702 New Edition, the three Series complete, with 11 woodcuts, 3 vols, post 8vo. cl. 



{o. p.), 10s %d (p. £1. 25 6flO 1886-9 



.13703 The MoON : her Motions, Aspects, Scenery, and Physical Condition, first edition, idth 



3 fine lunar photographs by Rutherford, and 22 plates, thick post 8vo. cl., 6* (p. 15s) 1873 



13704 Another Copy,' cl. {cover stained), 4s 



Valuable for its lunar photographs, which are best in the above edition. The first edition contains moreover matter 



left out in later ones as ' being too difficult for the general reader.' 

 13705 Second Edition, with 2 lunar photographs by Rutherford, 5 plates, map. Beer and 



Maedler's map by T. W. Webb {folding), and 33 woodcuts, post 8vo. cl., 4s (p. lOs 6ri) 1878 



13706 Mysteries of Time and Space, with24: illustrations, cr. 8vo. cl. (o. p.), .3s (p. 7s Qd) 1883 



13707 New Edition, with 24 illustrations, cr. 8vo. cl., 3s 6d (p. 7s 6d) 1886 



13708 Myths and Marvels of Astronomy, first edition, printed in large type, large 8vo. 



cl., Qs (p. 12s Qd) 1878 



13709 New Edition, luith front., post 8vo. cl., 3s 1889 



Including an interesting account of the Moon Hoax, and of some astronomical paradoxes. 



13710 New Star Atlas, 12 maps and 2 index plates, with Introduction on the Study of the 



Stars ; revised Edition by T. H. E. C. EsPiN, pr., F.R.A.S., diagrams, post 8vo. cl., 3s (p. 5s) 1908 



13711 The Orbs around Us : Familiar Essays on the Moon and Planets, Meteors and 



Comets, the Sun and Coloured Pairs of Suns ; 4th Edition, with front, and 4 woodcuts, post 8vo. 

 c/., 3s(p. 7s6rf) 1886 



13712 — Other Worlds than Ours : the Plurality of Worlds studied under the Light of recent 



Scientific Researches ; 3rd Edition [carefully revised], with 6 plates (4 coloured), large folding 

 map and 7 woodcuts, post 8vo. cl. {cover ivorn), 3s (p. 10s 6d) 1872 



13713 New Edition [revised], ivith 7 plates {including 4 coloured ones, and folding map), and 



woodcuts, post 8vo. cl., 3s 6d (p. 10s 6d) 1880 



13714 Reprint, post 8vo. cl., 2s (]d 1886 



In this, and all the later editions, plain prints were substituted for the fine coloured plates of the planets. 



13715 Saturn and its System, with Notes on Chaldtean Astronomy, Laplace's Nebular 



Theory, the Habitability of the Moon, a Series of Tables, and Explanations of Astronomical 

 Terms, first edition, ivith folding frontispiece and IS steel and copper plates, 8vo. cl. (scarce), 

 10s 6d 1865 



Mr. Proctor's first work, and published at his own expense, ' recognised immediately in the scientific world as the work 

 of a writer of consummate ability, but commercially a dismal failure ' (D. JV. B.). It is the only monograph on Saturn. 

 13716 Second Edition, revised, with 13 steel and copper plates, 8vo. cl. {o. p.), 8s Qd 1882 



13717 Our Place among Infinities : contrasting our little Abode in Space and Time with 



the Intinities around us; with Essays on Astrology and the Jewish Sabbath, cr. 8vo. cl., 2s 

 (p. 6s) 1875 



13718 The Southern Skies, showing the Position of the principal Star-Groups Night after 



Night throughout the Year, with Introduction and separate Explanation of each Map, true for 

 every Year, with front, and 12 maps, 4to. boards, 3s (p. 5s) 1896 



