HENRY SOTHERAN & CO., 140, STRAND, W.C, AND 43, PICCADILLY, W. 685 



13679 PBITCHARD (Andrew) Microscopic Illustrations of Living Objects, -svitli Researches 

 concerning the Methods of CONSTRUCTING MICROSCOPES, and Instructions for using them, by 

 C. R. Goring ; 2nd Edition, enlarged, with 4 plates (3 finely hand-coloured), and 31 voodcutu, 

 8vo. cl.j uncut, with inscr. by C. G. B. Daubetiey, M.D., F.R.S., 5s 1838 



13680 Third [last] Edition, with Supplement on the Verilication of Microscopic Phenomena, 



and an Exact Method of testing Microscopes, by C. R. Goring, m.d., with 4 copperplates and 51 

 woodcuts, 8vo. cl., 5s 1845 



Both the above editions coDtaiu chapters ' On the Optical Phenomena of certain Crystals ' by Henkv Fox. Tai.bot, 

 f.R.s. The author was an optical instrument maker, and made a lens out of a diamond, and others out of sapphires and 

 rubies. 



lo>)81 PB.ITCHAB.D (Charles; d.d., f.r.s., Savilian Prof. Astronomy, Oa;oM.) NoTEsur IcsEffets 

 de Diffraction produits par les Ecrans places devant les Objectifs Photographiques et Ordi- 

 naires, roy. 4to. (pp. 7), sewn, with author's inscr., 2s s. d. 



13682 Researches in Stellar Parallax by the Aid of Photography, with History of all 



Parallactic Researches by other Astronomers, icith frontispiece and diagrams, 2 vols. impl. 8vo. 

 sevm, 6s (p. 12a) ClareHcion Press, Oxford, 1892-89 



13683 Part II only (including History of Parallactic Researches), sewn, 2s (p. 4s 6rf) 



' The great merit of having rendered photography available for the sounding of the celestial depths belongs to Prof. 

 Pritchard. Tlie subject of his initial experiment was (il Cygni. From measurements of 200 negatives taken in 1880, hC' 

 derived for that classic star a parallax of 0-43S", in satisfactory agreement with Ball of 0'4ti.s". He carried out his pro- 

 ject of determining all second magnitude stars to the number of about 30.'- -Af ;*■••>• Ag\ies M. Clerke. 



13684 Uranometria Nova Oxoniensis : a Photometric Determination of the Magnitudes of 



all Stars visible to the Naked Eye, from the Pole to JO^ S. of the Equator, iiupl. 8vo. hf. houyid 

 {worn), with allegorical bookplate of Dr. Moncvre D. Contray {South rlacc Ethical Society), 4« 6d 



a. e., ib., 1885 



13685 Another Copy, sewn, 4* 



Forming a complement to Prof. E. C. Pickoiing's catalogue. 



i:J6S6 PRITCHARD (Henry Baden, f.c.s. ; son of the above) About Photography and 

 Photographers ; also Continental Rambles with a Camera, with numerous icoodevts, cr. 8vo. 

 seivn, 2s 188:i 



13687 The Photographic Studios of Europe, vnth woodcuts, cr. 8vo. sewn, 2s 6d 1882 



13688 PROCLUS "DlKDOCHJJSy PhUosophus Platonic us : In Primum Euclidis Elementorum 

 Librum Commentariorum ad Univei-sam Mathematicam Disciplinam Libri Till, a Francisco 

 Barocio, Patritio Veneto, cunctis Mendis expurgati, Scholiis, etc. aucti primum ia Romane 

 Lingue Venustate donati, et nunc recens editi, cum Catalogo Deorum et Mrorum lUustrium, 

 Elt'cho Libroru . . . et Indice ; with engraved title, fine ivowlcut poi^trait of F. Barozzi, (ft. 22, 

 and numerous diagrams, woodcut initials, and ornaments, Patavii, Gratiosus Perchacinus, 1560: 

 Fine (Oronce, latinc Orontius Fin^us) In Sex Priores Libros Geometricorum Element- 

 orum Euclidis MegarensLs Demonstrationes, quibus ipsius Euclidis TextusCiriecus, suisLocis 

 insertus est, cum Interpretatione Latina BARTHOiiOM^l Zamberti Veneti, ad Fidem geometricj^ 

 pereundem Orontium recognita ; uHth title surrounded by large and very fine woodcut border, and 

 nu7ne7'ous diagrams, also fine woodcut initials, and printer's device on blank I. at end, Parisiis, 

 apud Simonem Colinceum, 1536 — 2 vols, folio in 1, old calf gilt {rebackcd), with arms in gold and 

 initials ' L B' on sides {blank top of first title cut off, and a few II. slightly water stained, otherwise 

 in fine condition (very rare), £2. 2* 1560-3(; 



Proclus's commentary is of great valut.' for the history of Greek mathematics. The above is the first edition of the 

 work of Finaiis. 



• H'jchst wahrscheinlicli war Pioklus dor Erfinderder Enstehung der Ellipse als geoiuetrischer <>rt eines bestimmten 

 Punktes einer gcgebenen Strecke von bestiindiger Liiuge, welche alle Lagen annimmt, bei denen die beiden Endpunkte die 

 Schenkel eines rechten Winkels dnrchlaufen.'— Pn/. Moritz CanUYt; 



13689 In Primum Euclidis Elementorum Librum Commentarii (Gnece), ex Recognitione 



Godofredi Friedlein; with diagrams, fcap. 8vo. hf. morocco neat, 5«(p. M. 6. 75 sewn) Lipsia;, 1873 



13690 , The Philosophical and Mathematical Commentaries of, on the First Book of 



Eucud's Elements, and his Life by Marinus, translated from the Greek [with a History of 

 the Restauration of Platonic Theology, by the latter Platonists, a Translation of Proclus's 

 Theological Elements], and a Preliminary Dissertation on the Platonic Doctrine of Ideas (pp. 130), 

 by Thomas Taylor [' Platonist'], first English edition, with diagrams, 2 vols. 4to. m 1, hf. 

 calf gilt {binding slightly rubbed), with inscr. ' FROM THE Author Tho^ Taylor', and book- 

 plate of, and MS. notes by, Henry Reeve, C.B., editoi' of the * Grevillc Memoirs ' (scarce), £1. 10* 



printed for the Author \vere Editor], 1788-9 



1.3691 [Reprint], vnth 2 finely engraved vignettes, and diaarams, 2 vols. 4to. tree-calf gilt, 



reba^ked, with bookplate of Sir E. W. Watkin [_M.P., Railway dhairmani ; SCARCE, £1. 12* 6</ 



apud eundem, 1792 

 ' Containing a great deal of valuable information on the history of Greek mathematics. . . . He has ])reserved for us 

 quotations from other and better authorities.'— H'. Il'.iJ. llall. 



13692 : The FRAGMENTS that remain of the Lost Writings of Proclus, surnamed the Platonic 



Successor, translated by Thomas Taylor, post 8vo. boards, uncut (scarce), 12s 6rf 1825 



On Light, Fire, the Eternity of the World, etc. etc. 



13693 : La Sfera di Proclo Liceo, tradotta da Egnatio Danti. con le Annotazioni, e con 



rUso della Sfera del medesimo ; with fine woodcuts, and numerous diagrams, 2 vols. sm. 4to. in 

 1. old Italian ivhite vellum {some II. slightly water-stained on margin, otherwise a FINE COPY) ; 

 RARE. £1. 5* Fiorenza, nella Stamperia de' Giunti, 15735 



• Raro : dedicato alia famosa Isabella Medici Orsini. '—Ricmrdi. 

 Danti's Treatise on the Sphere has a separate titio and pagination. 



