228 HENRY SOTHERAN & CO., 140, STRAND, W.C., AND 37, PICCADILLY, W. 



4493 SNOW (Robert) OBSERVATIONS of the AURORA BOREALIS, from September 1834 to September 

 1839, with diagrams, post 8vo. (pp. 17), hf. calf, 35 tid privately printed, 1842 



4i9 SOCIETY of ARTS, The JOURNAL of the, and the INSTITUTIONS in UNION; from 



Nov., 1857 to Nov., 1906 (Vols. VI-L1V), COPIOUSLY ILLUSTRATED with thousands of 

 woodcuts, etc., 49 v. : Index to vv. XXI-XXX 50 vols. roy. 8vo., the first 25 vv. hf. 

 calf gilt, and the rest in hf. roan gilt (fine set), 15. 15s 18-37-1906 



4495 - - : TRANSACTIONS of the SOCIETY instituted at London for the EN- 



COURAGEMENT of ARTS, MANUFACTURES, and COMMERCE, with the Premiums 

 offered; COMPLETE from the beginning in 1783 to 1833 (Vols. I-XLIX), with 

 portraits and numerous plates, 49 v. : Index to vv. I-XXV 50 vols. 8vo., the first 33 vv. 

 in hf. russia gilt, and the rest in boards or sewn (VERY SOUND SET), 12. l'2s 1783-1833 



Two very important publications, especially in connexion with applied science, ; they contain valuable contributions by 

 some of the foremost scientists of the time. The descriptions of inventions which were awarded prizes by the Society are 

 of special importance. The Jjurnal forms the continuation of the Trantactunt*. 



4493 SOETEN (Mattheus) ALGEMEENE MANIER tot het MAAKEN van ZONNEWYSERS op allerley 

 eti'en Ylakken . . . voor alle persoonen die met een Passer gewoon zyn oni te gaan, enz. ; with 

 '26 plates, l'2mo. old vellum (rare}, l'2s Qd Amsterdam, 1719 



Unknown to Poggendorft', Brunet, Graesse, and others. 



4497 SOHNCKE (Ludwig Adolf, Unio. Halle] BIBLIOTHECA MATHEMATICA : Verzeichniss der 

 Biicher iiber die gesammten Zweige der Mathematik, welche in Deutschland und im Auslande 

 von 1830 bis 185-1 erschienen sind, init Materienregister [vollendet von WILHELM ENGELMANN], 

 Svo. sewn, 4s Leipzig, 1854 



An international bibliography of mathematics, !S30-.',4. 



449S SOLAR ECLIPSES (TOTAL) of July 29, 1878, and January 11, 1880, REPORTS on the, issued 

 by the UNITED STATES NAVAL OBSERVATORY, with numerous plates (some COLOURED), and 

 woodcuts, thick 4to. cl. (hack torn], 15s Washington, 1880 



' The leading, and a truly amazing, characteristic of the phenomenon of the solar eclipse of 1878 was formed by two vast, 

 faintly luminous U-UKJ* of light, expanded on either side by the sun in the direction of the ecliptic. By far the most 

 striking observations wpre made by Newcomb at Separation (Wyoming), and by Langley at the summit of Pike's Peak [both 

 in the ah ire r/>!ume], at an elevation of 14,100 feet, above the sea. Never before had an eclipse been viewed from anything 

 approaching that altitude, or under so translucent a sky.' A<nies M. L'hrke. 



4499 - - of May 28, 1900, and May 17, 1901 : REDUCTION TABLES for TRANSIT CIRCLE 

 OBSERVATIONS : REDUCTION TABLES for EQUATORIAL OBSERVATIONS: The PRESENT STATUS of 

 the USE of STANDARD TIME (forming Publications of the U.S. Naval Observatory, II. Series, 

 Vol. IV, pt. IV), with numerous plates, 4to. cl., 12-s 6d ibidem, 1906 



4500 SOLLY (Edward, F.R s.) SYLLABUS of a COMPLETE COURSE of LECTURES ON CHEMISTRY, Svo. 

 cl., 3.9 1849 



4501 SOLSKI (Stanislaw, s.J.) PRAXIS NOVA et EXPEDITISSIMA Mensurandi Geometric . . . sine 

 Usu Ordinario Regul;e proportionum . . . accesserunt du;c alia3 praxes multo faciliores, si Tabulae 

 addantur gradus lixi, vel mobiles ; with numerous woodcuts and diagrams, 4to. old boards, Us Qd 



Cracovicc, 1688 

 VERY HAKE, and unknown to Poggendorff, Brunet, Graesse, etc. 



4502 SOMERSET (Edward Adolphus Seymour, llth Duke of) TREATISE in which the ELE- 

 MENTARY PROPERTIES of the ELLIPSE are deduced from the PROPERTIES of the CIRCLE, and 

 Geometrically demonstrated, with diagrams, Svo. calf extra, by Haydaij, with the Duke's library 

 stamp on title, 5s 1842 



Probably the only mathematical treatise by a British Duke. 



' Given me by the Duke of Somerset July 10th, 1842 '.Inner, on fli/lntf. 



4503 SOMERVILLE (Mary) On the CONNEXION of the PHYSICAL SCIENCES, 8th Ed., with bust- 

 portrait on steel, 5 plates, and diagrams, 12mo. cl., or, hf. calf, 3.s Qd 1849 



4504 - ANOTHER COPY, caff extra (nice copt/), 4.s Qd 



4505 - NINTH EDITION, completely revised, icith bust-portrait, 10 plates, and diagrams, post 

 Svo. cl , or, hf. calf, 5s 1858 



4506 - ANOTHER COPY, cl., with inscr. and quotation from ' Locksley Hall' by PROF. WALTER 

 W. SKEAT, pr., dated Jan. 1860, Qs 



4507 - - TENTH [LAST] EDITION, by ARABELLA R. RUCKLEY, with portrait, woodcuts and dia- 

 grams, large post Hvo. cl., Qa Qd 1877 



'An able summary of research into physical phenomena. A sentence contained in it, pointing out- that the perturba- 

 tions of I'lamis might disclose the existence of an unseen planet, suggested, as Prof. Adams afterwards declared, the 

 calculations In.m which he dcdund the orbit of Neptune '. /A N. I!. 



4508 - MECHANISM of the HEAVENS, 116 diagrams, thick Svo. cl., uncut (SCARCE), 1. Is 1831 



4509 ANOTHER COPY, hf. calf (title mended), 15.? 



Unquestionably one of the most remarkable works that female intellect ever produced in any age or country.' Sir 

 Joli 11 Hr.whi-1 (Eilin. Rue.'.. 



4510 - On MOLECULAR and MICROSCOPIC SCIENCE, with plates and numerous woodcuts, 2 vols. 

 post Svo. cl., 7.vuW(p. 1. ].s) 1869 



'A summary of the most, recent discoveries in chemistry and physics'. I). A r . J! It was written at the age of 87. 



4511 - - PHYSICAL GEOGRAPHY; new Edition, thoroughly revised, with fine (not bust) portrait, 

 aet. 68, bi/ W. MOLL, '2 vols. 12mo. calf extra, Qs Qd 1849 



4512 SOMOFF (Joseph, Unio. St. Petersburg) KINEMATIK, aus dem Russischen iihersetxt von ALEX- 

 ANDER ZlWKT; with diagrams, Svo. hf. maroon morocco neat (title stamped), <s Leipzig, 1878 



