PHYSICS. 63.- 



Physikalischo Technik specii'il Anloituug zur Selbstanfertigiiiig physikalischftr Ap- 



parate. 0. Lehmami. 8vo. pp. xii, 419. Leipzig, 1885, 

 Elementary Mechanics. O. J. Lodge. 12mo. pp. 208. Edinbnrgli, 1885. (Cham- 

 bers. ) 

 Cours do m^cauique et machines profess6 a I'ficole polytechnique. Tome I. Ciu6- 



matiqiie, dynamique du point matdriel, statique. Bresse. 8vo. pp. xxii, .^>;J9. 



Paris, 1884. (Ganthier-Villars.) 

 Treatise ou dynamics. W. H. Besant. 8vo. pp. 320. London, 1885. 

 An elementary treatise on dynamics, containing applications to thermodynamics; 



with numerous examples. B. Williamson and F. A. Tarleton. Bvo. pp. 460. 



London, 1885. (Longmans.) 

 Anfgaben zur Theorieelastischer Korper. J. J. Weyrauch. 8vo. pp. x, 350. Leip- 

 zig, 1885. (Tenbuer.) 

 Sammlungvon Problemender analytischen Mechanik. F, Krafl't. Bandl. Bvo. pp. 



ti50. Stuttgart, 1885. 

 Die Entstehung der Sprache durch Nachahmuug des Schalles. Th. Curti. Hvo. pp. 



72. Stuttgart, 1885. 

 Die Schall- und Ton-Starke und das Schallleitungsvermogen der Korper. K. von 



Vierordt. 8vo. pp. xxii, 274. Tiibingen, 1885. (Laupp.) 

 On a method of precisely measuring the vibratory periods of tuning forks and. the 



determinations of the laws of the vibrations of forks ; with special reference of 



the.se facts and lav.s to the action of a simple chrouoscope. A. M. Mayer. 4to. 



pp.17. Washington, 18S5. (Mem.Nat. Acad. Sciences, III.) 

 The sensations of tone as a physiological basis for the theory of music. H. L. F. von 



Helmholtz. 2d Eng. ed. Trans, by A. J. Ellis. 4to. pp. xx, 576. London, 1885. 



(Longmans.) 

 Recherches exp^rimentales et analytiques sur les machines d, vapeur. Du degr6 



d'exactitude des donn6es d'observation d'un essai de machine h vapeur. R6pons6 



iiM.A. Hirn. G. Leloutre. Bvo. pp.24. Paris, 1885. (Tignol.) 

 Terniodinatoica. C. Cattaneo. 16mo. pp. ix, 195. Milano, 1884. 

 Etude sur la thermo-dynamique appliqu^e h. la production de la force motrice et du 



froid. Ch. Tellier. Bvo. pp. vii, 549. Paris, 1884. 

 Siedetemperatur und Druck in ihren Wechselbeziehungen. G. W. A. Kahlbaum. 



8vo. pp. viii, 153. Leipzig, 1885. (Barth.) 

 Om stralande varnies diffusion par plana ytor. K. Angstrom. Bvo. pp. 55. Upsala, 



1885. 

 Recherches oxp^rimentales et analytiques sur les machines h vapeur du Woolf. G. 



Leloutre. Bvo. pp. 5B. Paris, 1885. (Tignol.) 

 On Light. Second course. On Light as a means of investigation. G. G. Stokes. 



16mo. pp. viii, 107. London, 1885, 

 Spectrum Analysis. H. Schellen. (Translated from the third German edition by 



Jane and Caroline Lassell. Edited with notes by Captain Abney, R. E.) Bvo. 



London, 1885. 

 Ueber den Beleuchtnngswerth der Lampglocken. H. L. Cohn. Bvo. pp. viii, 74. 



Wiesbaden, 1885. (Bergmann.) 

 Vorlesungen iiber theoretische Optik, gehalten an der Universitat Konigsberg. F. 



Neumann. Herausgegeben von E. Dorn. Bvo. pp. viii, 310. Leipzig, 18B5. 



(Teubner.) 

 La grammaire de la couleur. E. Gnichard. 3 vols. Bvo. Paris, 1B85. 

 Traits de la lumifere. Huyghens, Edited by W. Burchhardt. Bvo. pp. iv, 134. 



Lipsiae, 1885. (Gressner & Schramm.) 

 Theoretische Optik gegriindet auf das Bessel- Sellmeier'sche Princip. E. Ketteler. 



Bvo. pp. xiv, 652. Braunschweig, 18H5. (Vieweg.) 

 A Manual of Telegraphy. W. Williams. Bvo. pp. xxii, 327. London, 1885. (Long- 

 mans.) 



