HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 43, PICCADILLY, \V. 68i 



13679 PRITCHARD (Andrew) MICROSCOPIC ILLUSTRATIONS of LIVING OBJECTS, with Researches 

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

 C. R. C4ORING ; 2nd Edition, enlarged, with 4 plates (3 .finely hand-coloured), and 31 woodcuts, 

 8vo. cL, uncut, with inscr. by C. G. B. Daubeney, M.D., F.R.S., 5s 1838 



13680 THIRD [LAST] EDITION, with Supplement on the Verification 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 contain chapters ' On the Optical Phenomena of certain Crystals ' by HENRY Fox. TALBOT, 

 F.R.S. The author was an optical instrument maker, and made a lens out of a diamond, and other.s out of sapphires and 

 rubies. 



13681 PRITCHARD (Charles; D.D., F.R.S. , Savilian Prof. Astronomy, Oxon. ) NOTE sur les EFFETS 

 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, with frontispiece and diagrams, '2 vols. impl. 8vo. 

 sewn, 6s (p. 12*) Clarendon Press, Oxford, 1892-89 



13683 PART II only (including History of Parallactic Researches), sewn, "2s (p. 4s Qd) 



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

 Pritchard. The subject of his initial experiment was 61 Cygni. From measurements of 200 negatives taken in 1880, he- 

 derived for that classic star a parallax of 0-438", in satisfactory agreement with Ball of 0'46S". He carried out his pro- 

 ject of determining all second magnitude stars to the number of about 30.' Misn Agnes M. Clerke, 



13684 URANOMETRIA NOVA OXONIENSIS : a Photometric Determination of the Magnitudes of 



all Stars visible to the Naked Eye, from the Pole to 10 S. of the Equator, impl. 8vo. hf. bound 

 (worn), with allegorical bookplate of Dr. Moncure D. Conu-ay (South Place Ethical Society), 4s Qd 



a.e., ib., 1885 



13685 ANOTHER COPY, sewn, 4s 



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



13686 PRITCHARD (Henry Baden, F.C.S. ; son of the above) About PHOTOGRAPHY and 

 PHOTOGRAPHERS ; also Continental Rambles with a Camera, with numerous woodcuts, cr. 8vo. 

 sewn, 2s 1883. 



13687 The PHOTOGRAPHIC STUDIOS of EUROPE, with woodcuts, cr. 8vo. sewn, 2s Qd 1882 



13688 FROCLU3 DIADOCHT7S, Philosophus Platonicus ; In PRIMUM EUCLIDIS ELEMENTORUM 

 LIBRUM COMMENTARIORUM ad Universam Mathematicam Disciplinam Libri IIII, a FRANCISCO 

 BAROCIO, Patritio Veneto, cunctis Mendis expurgati, Scholiis, etc. aucti primum ifi Ilomane 

 Lingue Venustate donati, et nunc recens editi, cum Catalogo Deorum et Virorum Illustrium, 

 Elecho Libroril , ,. . et Indice ; with engraved title, fine woodcut, portrait of F. Barozzi, ffit. 22, 

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

 Fine (Oronce, latine ORONTIUS FIN^EUS) In SEX PRIORES LIBROS GEOMETRICORUM ELEMENT- 

 ORUM EUCLIDIS Megarensis DEMONSTRATIONS, quibus ipsius EuclidisTextusGrsecus, suisLocis 

 insertus est, cum Interpretatione Latina BARTHOLOM^I ZAMBERTI Veneti, ad Fidem geometrical 

 per eundem Orontium recognita ; with title surrounded by large and very fine woodcut border y and 

 numerous diagrams, also fine woodcut initials, and printer's device on blank I. at end, Parisiix, 

 apud Simonem Colinceum, 15362 vols. folio in 1, old calf gilt (rebacked), with arms in gold and 

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

 in fine condition (very rare), 2. 2s 1560-36 



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

 work of Finseus. 



' Hochst wahrscheinlich war Proklus der Erfinderder Eristehung der Ellipse als germietrisclier Ort eines bestimmten 

 Punktes einer gegebenen Strecke von bestiindiger Litnge, welche alle Lagen anniiumt, bei denen die beiden Endpunkteulie 

 Schenkel eines rechten Winkels durchlaufen.' Prof. Moritz Cantor. 



13689 In PRIMUM EUCLIDIS ELEMENTORUM LIBRUM COMMENTARII (Greece), ex Recognitione 



GODOFREDI FRIEDLEIN; with diagrams, fcap. 8vo. hf. morocco neat, 5s(p. M. 6. 75 sewn) Lipsice, 1873 



13690 , The PHILOSOPHICAL and MATHEMATICAL COMMENTARIES of, on the FIRST BOOK of 



EUCLID'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. in 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 ' Greville Memoirs' (SCARCE), 1. IQs 



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



13691 [REPRINT], with 2 finely engraved vignettes, and diagrams, 2 vols. 4to. tree-calf gilt, 



rebacked, with bookplate of Sir E. W. 'Watkin [M.P., Railway Chairman] ; SCARCE, 1. 12s Qd 



apud eundem, 1792 



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

 quotations from other and better authorities.' W. W.R. Ball. 



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 Qd 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 



1'Uso della SFERA del rnedesinio ; with fine woodcuts, and numerous diagrams, 2 vols. sni. 4!to. in 

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

 RARE, 1. 5s Fiorenza, nella Stamperia de' Giunti, 1573 



' Raro : dedicate alia famosa Isabella Medici Orsini.' Riccardi. 

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



