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



Physics, continued: — 



17054 GREIOHACHER (Heinrich ; Univ. Zurich) Die neueren Strahlen : Radium (a-/3-y-) 

 Strahlen, Kathoden-, Kanal-, Anoden-, Rontgenstrahlen, in leichtfasslichenEinzeldarsbellungen ; 

 with 66 illustrations, roy. 8vo. buckram, 3s (p. M. 4 sewn) Stuttgart, 190^ 



17055 GRIMSEHL (E.) Lehrbuch der Physik, mit Anhang, entlialtend Tabellen physikalischer 

 Konstanten und Zahlentabellen ; with 2 coloured spectrum-plates ^ and 1091 text-illustrations, 

 thick Svo. (pp. 1052), hf. black morocco neaty cl. sides {as good as new), 10? Qd (p. M. 16 in cl.) 



Leipzig, 190& 

 One of the best shorter German treatises on physics. 



17056 GROTH (Hugo) Physikalische Prinzipien der Naturlehre und Isaak Newton's 

 mathematische Prinzipien, cr. Svo. buckram, 3s (p. M. 4 sewn) Kiel, 1912 



17057 GUICHARD (C, de la Sorbonne) Problemes de Mecanique et Cours de Cinematique, 

 Redaction de MM. Dautry et Deschamps ; with diagrams, large Svo. buckram, 45 (p. F. 6 nett 

 sewn) 1913 



17058 GTJILLET (Amedee) Proprietes Cinematiques fondamentales des Vibrations, Notes de 

 M. Aubert ; with 103 diagrams, roy. Svo. hf. blaik morocco neat, cl. sides, t. e. g. {as good as new), 

 lis (p. F. 16 nett sewn) 1913 



17059 GUILLOT (L.) Cours de Mecanique, Tome I^r : Principes et Theoremes gen^raux ; Statiqiie 

 grapliique ; Resistance des Materiaux; with 280 illustrations, sq. Svo. cl., 5s (p. F. 10 nett) 1911 



17060 HANDBUCH der PHYSIK, unter Mitwirkung von F. Auerbach, E. Brodhuhn, F. 

 Braun, S. Czapski, K. Exner, W. Feussner, L. Gratz, H. Kayser, F. Melde, O. Oberbeck, 

 J. Pernet, Fr. Stenger und K. Waitz herausgegeben von A. Winkelmann ; with plate and 

 929 woodcuts, 3 vols. roy. Svo. in 5, handsomely bound in hf. crushed brown morocco, cl. sides 

 (FINE SET), £2. 2.9 (p. M. 105 sewn) ' Breslau, 1891-6 



IxHALT:— I. Mechauik und Akustik: II. 1. Optik : II. 2. Wiirme : III. 1-2. ElektrizitJit und Magnetismus. 



17061 ZWEITE [neueste] Auflage, herausgegeben von A. Winkelmann, Univ. Jena; ivith 



2118 illustrations, 5 thick vols. roy. Svo. in 6, uniformly and handsomely bound in hf. pigskin, cl. 

 sides, uncut, t. e. g. (fine set), £8. 8s (p. M. 221 sewn) " Leipzig, 1905-9 



Inhalt:— I. Allgemeine Physik : II. Akustik: III. Wiirme: IV. Elektrizitiit uud Magnetismus, 2 v. : V. Optik. 



It is the most complete and up-to-date treatise on physics in any language. 



17062 HAUCK (W. Ph.) Die Grundlehren der Elektricitat, mit besonderer Riicksicht auf ihre 

 Anwendungen in der Praxis, 3. [neueste] Auflage ; with portrait of Volta and 85 illustrations, cr. 

 Svo. cl., or, buckram, 2s 6d (p. M. 4) Wien, 1896 



17063 HAXJGHTON (Samuel, ^r., t.c.d., m.d., f.r.s.) Principles of Animal Mechanics, 2nd 

 [last] Edition, with 110 woodcuts and diagrams, Svo. cl. {o. p.), 10s 6d (p. £1. Is) 1873 



' The object of this volume is to show that the muscular mechanism is so arranged that the work required of it is done 

 with a less expenditure of mnscular contraction than would result from any other configuration. This he calls 'the 

 principle of least action.' '—D.N'.D. 



17064 HAVELOOK (Thomas Henry, f.r.s., Armstrong Coll.) The Propagation of Disturbances 

 in Dispersive Media [with Bibliography] , ivith 27 diagrams, Svo. sew7i, 2s Qd (p. 3s 6d nett) 1914 



17065 HEATH (Robert Samuel ; V.-P. Univ. Birmingham) Elementary Treatise on Geo- 

 metrical Optics; 2nd [latest] Edition, ivith diagrams, cr. Svo. cl., 3s Univ. Press, Cambridge, 1897 



17066 Treatise on Geometrical Optics ; 2nd [latest] Edition, enlarged, with numerous 



diagrams, Svo. buckram, t. e. g. {o. p.), 12s 6d apud eandem, ibidem, 1895 



The standard work on the subject. 



17067 HELM (Georg; Technische Hochschide, Dresden) Die Elemente der Mechanik und MATHE- 

 matischen Physik ; with illustrations, Svo. buckram, 3s Leipzig, 1884 



17068 HELMHOLTZ (Hermann Ludwig Ferdinand v.; Univ. Berlin, f.r.s.) Handbuch der 

 physiologischen Optik, 2. umgearbeitete Auflage ; with 8 plates and 254 woodcuts, roy. Svo. 

 (pp. 1353), handsomely bound in hf. black morocco, cl. sides, uncut, t. e. g. {fine copy), £1. 8s Qd 

 (p. M. 53 sewn) Hamburg, 1896 



The author's most important work, the first systematic treatise applying physical laws to the study of the physiology 

 of the eye, and equally valuable for the original discoveries and the historical investigations it contains. 



17069 Die Lehre von den Tonempfindungen als physiologische Grundlage fiir die 



Theorie der MusiK ; 5. [letzte] Auflage [herausgegeben von R. Wachsmuth] ; with fine photo- 

 gravure portrait, and 66 text -illustrations, Svo. handsomely bound in hf. crushed maroon morocco, 

 cl. sides, uncut, t. e. g. {as good as new), 10s (p. M. 12 sewn) Braunschiveig, 1896 



Latest edition of this great work, containing the author's numerous discoveries in physical and physiological acoustics. 



17070 Wissenschaftliche Abhandlungen [mit Nachruf (pp. 26) von G. Wiedemann]; 



with 2 fine portraits, 8 plates, and text-illustrations, 3 thick vols. 8vo. handsomely bound in hf. 

 brown morocco, cl. sides {fine copy), £2. (p. M. 58 sewn) Leipzig, 1882-95 



17071 HENNEBERG (Lebrecht ; Prof. Mechanics, Darmstadt) Die GRAPHISCHE Statik der 

 STARREN Systeme ; with 394 diagrams^ Svo. (pp. 747), handsomely bound in hf. pigskin, cl. sides, 

 t. e. g., 17s 6d (p. M. 24 in cl.) Leipzig, 1911 



17072 HERBMANN (Gustav) The Graphical Statics of Mechanism, translated and annotated 

 by A. P. Smith ; 5th Edition, with 8 folding plates, cr. Svo. cl., 5s (p. $2) New York, 1904 



17073 HEUN (Karl, Karlsruhe) Kinematik (Lehrbuch der Mechanik I. Teil), mit Einleitung in 

 die elementare Vektorrechnung ; with 94 diagrams, large cr. Svo. cl., 5s (p. M. 8) Leipzig, 1906 





