Physik. 



437 



5733 Greenwich. — Results of the Magnetical and Meteorological Observations made 

 at the Royal Observatory, Greenwich, in the year 1888, under the direction of 

 W. H. M. Ghristie. London 1 890. roy. 4. Mark 4 



5734 Hall, A., Saturn and its Ring, 1 875 — 89. (Washington Observations, Appendix 

 II.) Washington 1889. 4. 22 pg. with 3 plates in colours. 6 



5735 Holetschek, J., üeber den scheinbaren Zusammenhang der heliocentrischen 

 Perihellänge mit der Perihelzeit der Kometen. Wien (Sitzungsb. Akad.) 1890. 

 gr. 8. 25 pg. 04o 



5736 Observations made during the year 1 884 at the United States Naval Obser- 

 vatory. S. R. Franklin, Superintendent. With Appendix: Catalogue of Stars 

 observed at the United States Naval Observatory during the years 1845 to 

 1877, prepared for publication by M. Yarnall. 3. edition, revised and corrected 

 with renumbering of the Stars by E. Frisby. Washington 1 889. roy. 4. 92 

 and 343 pg. and Catalogue of Stars, 26 and 302 pg. cloth. 36 



5737 Wilson, H. G., and Payne, W. W., Catalogue of 644 Comparison-Stars, observed 

 during the years 1887 to 1889. (Publications of Carleton College Observatory 

 I.) Nortbfield Minn. 1890. 8. 



5738 Winterhalter, A. Cr., The International Astrophotographic Congress, and a Visit 

 to certain European Observatories and other Institutions. (Washington Obser- 

 vations for 1885, Appendix I.) Washington 1889. roy. 4. 15 and 354 pg. with 

 many illustrations. 20 



Physik. 



5739 Arrhenius, S., Ueber das elektrische Leitungsvermögen von Salzdämpfen in der 

 Bunsenflamme. Vorläufige Mittheilung. Wien (Sitzungsb. Akad.) 1890. gr. 8. 



8 pg. Oao 



5740 Basset, A. B., An elementary Treatise on Hydrodynamics and Sound. Cam- 

 bridge 1890. 8. cloth. 7so 



5741 Bertillon, A., La Photographie Judiciaire, avec un appendice sur la Classification 

 et l'identification anthropometriques. Paris 1890. 8. 1 15 pg. av. 8 planches 

 et 14 figures. 3 



5742 Bums, C, On the thermo-electric Measurements of high Temperatures. Washing- 

 ton (Bull. U. S. Geol. Surv.) 1890. roy. 8. 1öo 



5743 GhäUVeau, G., Traite theorique et pratique des Moteurs ä Gaz. Gaz de houille, 

 gaz pauvres, air carbure (petroles), et de leurs applications diverses. Paris 



1 890. gr. in-8. avec de nombreuses gravures dans le texte. 12bo 



5744 Glarke, F. W., Report on work done in the Division of Chemistry and Physics of 

 the U. S. Geological Survey, mainly during the fiscal year 1886 — 87. Washing- 

 ton (Bull, ü. S. Geol. Surv.) 1890. roy. 8. 1 



5745 Gohn, P., Ueber Nachwirkungsänderungen des Widerstandes hartgezogener Drähte. 

 Königsberg 1890. 8. 29 pg. m. 1 Tafel. I50 



5746 Gzermak, P., Reductionstabellen zur Gauss-Poggendorff'schen Spiegelablesung. 

 Tables de reduction d'apres la Methode du Miroir de Gauss - Poggendorff. Re- 

 duction tables for readings by the Gauss - Poggendorff Mirror Method. Berlin 

 1 890. 4. 24 u. 86 pg. m. 7 Figuren. Leinenband. 12 



5747 Exner, F., Beobachtungen über athmosphärische Elektricität in den Tropen. 

 Theil II. Wien (Sitzungsb. Akad.) 1890. gr. 8. 53 pg. m. 4 Figuren. 1 



Theü I. 1889. 24 pg. M. 0.50. 



5748 Fäbre, G., Traite encyclopedique de Photographie, (4 volumes en 20 livraisons.) 

 Paris 1889. gr. in-8. av. figures. — Livraison 15: pg. 321 —407 (fin du Vo- 

 lume III: Phototypes positifs. Photocopies. Photocalques. Phototirages) . 



Volume I contient: Materiel photographique; Vol. II: Phototypes nega- 

 tifs. — Prix de souscription pour Vouvrage complet M. 34. 



5749 Fisch, A., La Photocopie ou procödes de Reproductions industrielles par la 

 Lumiete d'une facon rapide et economique des dessins, plans, cartes, gravures, 

 ecritures etc. 2. edition, revue, corrigee et augmentee. Paris 1890. 8. 69 pg. 

 av. 2 planches. 1so 



Naturae Novitates. Jahrg. XII, No. 20. R. Friedländer & Sohn in Berlin. 



