280 



Physik. 



4309 HawkillS, C. C, and Wallis, F., The Dynamo; its theory, design and manii- 

 facture. London 1893. 8. 520 pg. w. 190 illustrations. cloth. Mark 11 



4310 HelmholtZ, H. V., On atmospheric Movements (from: Abbe, Mechanics of the 

 Earth's Atmosphere). Washington 1891. 8. 34 pg. 



4311 — On the Integrals of the hydrodynamic Equations that represent Vortex Motions 

 (from: Abbe, Mechanics of the Earth's Atmosphere). Washington 1891. 8. 27 pg. 



4312 — The Energy of the Billows and the Wind (from: Abbe, Mechanics" of the 

 Earth's Atmosphere). Washington 1891. 8. 1 8 pg. 



4313 — On the theorem relative to Movements that are geometrically similar in fluid 

 Bodies, together with an application to the problem of steering Ballons (from : 

 Abbe, Mechanics of the Earth's Atmosphere). Washington 1891. 8. 1 1 pg. 



4314 — On discontinuous Motions in Liquids (from: Abbe, Mechanics of the Earth's 

 Atmosphere). Washington 1891. 8. 9 pg. 



4315 Hering, C, Report on the Electricity at the Paris Exposition 1889. Washington 

 1893. 8. 247 pg. w. figures. 



4316 Hertz, H., Graphic method of determining the adiabetic Changes in the condition 

 of moist Air (from: Abbe, Mechanics of the Earth's Atmosphere). Washington 

 1891. 8. 14 pg. w. 1 plate. 



4317 Him. — Faudel et Schwoerer, E. ; G. A. Hirn. Sa vie, sa famille, ses travaux. 

 Paris 1893. 8. avec 1 portrait, 1 autographe (de Hirn) et 3 planches. 4s 



4318 Jhering, A. V., Die Gebläse. Bau u. Berechnung der Maschinen zur Bewegung, 

 Verdichtung u. Verdünnung der Luft. Berlin 1893. gr. 8. 1 1 u. 708 pg. m. 3 Tafeln 

 u. 464 Abbildungen. Leinenband. 20 



4319 Kennedy, A. B.W., The Mechanics of Machinery. London 1893. 8. 652 pg. w. 

 numerous illustrations. cloth. 95 



4320 Kilgonr, M. H., Swan, H., and BiggS, C. H. W., Electrical Distribution; its theory 

 and practice. London 1893. 8. 426 pg. w. illustrations. cloth. 11 



4321 Kirchhoff, G., The Theory of free liquid Jets (from: Abbe, Mechanics of the 

 Earth's Atmosphere). Washington 1891. 8. 9 pg. 



4322 Kurth, 0., Beitrag zur Erklärung der Farben von Kry stallplatten im polarisirten 

 Licht. Theil II. Jauer 1893. 4. 1 4 pg. 1 



Theil I. 1892. 15 pg. m. \ Tafel. M. 1,20. 



4323 Margüles, ML, On the Vibration of an Atmosphere periodically heated (from: Abbe, 

 Mechanics of the Earth's Atmosphere). Washington 1 891. 8. 23 pg. 



4324 Michelson, A. A., On the application of Interference Methods to spectroscopic 

 Measurements. Washington (Smiths. Contrib. to Knowl.) 1892. 4. 24 pg. w. 

 5 plates. 4 



4325 Minel, P., Introduction ä l'Electricite industrielle. 2 volumes. (I: Potentiel, flux 

 de force, grandeurs electriques. II: Circuit magnetique, induction, machines.) 

 Paris 1893^ 8. 227 et 176 pg. av. 67 figures. Chaque volume %i 



4326 Oberbeck, A., On the phenomena of Motion in the Atmosphere (from: Abbe, 

 Mechanics of the Earth's Atmosphere). Washington 1891. 8. 22 pg. 



4327 — The Movements of the Atmosphere on the Earth's surface (from: Abbe, 

 Mechanics of the Earth's Atmosphere). Washington 1891. 8. 20 pg. 



4328 — Discontinuous Motion in Liquids (from: Abbe, Mechanics of the Earth's 

 Atmosphere). Washington 1891. 8. 12 pg. 



4329 — On the Guldberg-Mohn Theory of horizontal Atmosphere Currents (from: 

 Abbe, Mechanics of the Earth's Atmosphere). Washington 1891. 8. 5 pg. 



4330 Panlsen, A., Naturkraefterne, deres Love og vigtigste Anvendelser. 2., omarbej- 

 dede og forögede udgave. Kjöbenhavn 1893. 8. m. Tafeln u. Abbildungen. — 

 Lieferung 14 u. 15: pg. 833—960. Jede Liefg. 12 



4331 Pellat, H., Gours de Physique. 2. edition, entierement refondue. 2 volumes. 

 Paris 1893. gr. in-8. av. figures. 22 



4332 Poincare, H., Theorie des Tourbillons. Lecons professees pendant le 2. semestre 

 1891—92, redigees par Lamotte. Paris 1893. 8. 216 pg. av. figures. 52 



4333 Rotch, A. L, Meteorology at the Paris Exposition and Proceedings of the inter- 

 national Meteorological and the international Hydrological and Climatological 

 Congress, held at Paris during the Exposition 1889. Washington 1893. 8. 50 pg. 



Naturae Novitates. Jahrg. XV, No. 13. 



R. Friedländer & Sohn in Berlin. 



