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6231 Mosman, A. T., Woodward, R. S., and Tittmann, 0. EL, Report and the Measure- 

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 Washington (Rep. U. S. Goast a. Geod. Surv.) 1893. 8. 177 pg. w. 5 plates. 



6232 Preston, E. D., On the Variation of Latitude atWaikiki, near Honolulu. Washington 

 (Rep. U. S. Coast a. Geod. Surv.) 1893. 8. 109 pg. w. 14 plates. 



6233 Rogers, W. A., Comparison of Position of Stars between 49° 50' and 55° 10' 

 of North Declination in 1855.0 and observed with the Meridian Circle during 

 the years 1870 to 1884, under the direction of J. Win lock and E. C. Pickering. 

 Cambridge (Ann. Observ. Harv. Coli.) 1893. roy. 4. 19 a. 382 pg. 



6234 Schott, C. A., Report on Heights from geodetic Leveling between Corinth, Miss., 

 and Memphis, Ten., 1890—91. Washington (Rep. U. S. Coast a. Geod. Surv.) 

 1893. 8. 22 pg. 



6235 — Report on Heights from geodetic Leveling between Okolona, Miss., and Odin, 

 III., 1885 and 1888—91. Washington (Rep. U. S. Coast a. Geod. Surv.) 1893. 8. 

 46 pg. w. 1 plate. 



6236 Smith, E., Description of the Station, Instruments and Methods of Observing for 

 the Variation of Latitude at Rockville, Md. Washington (Rep. U. S. Coast a. 

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6237 Taylor, A., On the selection of suitable Instruments for Photographing the Solar 

 Corona during Total Solar Eclipses. Dublin (Proc. Roy. Dubl. Soc.) 1894. 8. 



6238 Todd, M. L, Total Eclipses of the Sun. London 1894. 8. 15 a. 244 pg. with 

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Physik. 



6239 Annales de l'Observatoire magnötique de Copenhague, publikes par A. Pauls en. 

 Annees 1892. Copenhague 1893. gr. in-4. 51 pg. 3 



6240 Bach, C, Versuche über die Widerstandsfähigkeit von Kesselwandungen. Heft II: 

 Die Berechnung flacher, durch Anker oder Stehbolzen unterstützter Kesselwandungen 

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 56 pg. m. 2 Tafeln u. 56 Holzschnitten. 3 



HeftI: Wasserkammerplatten von Wasserröhrenkesseln. 1893. 24 pg. m. 77 Holzschnitten. M. 2,40. 



6241 BartOÜ, A., e Stracciati, E., Süll' assorbimento delle radiazioni solari dalla 

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6242 Bosscha, J., Leerboek der Natuurkunde en van hare voornaamste Toepassingen. 



7. druk. Aflevering I, stuk 1. Leiden 1894. 8. 8 u. 239 pg. 



6243 Bouquet, R. P., et Loppe, Traitö thöorique et pratique des Courants alternatifs 

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6244 Bonssac, A., Construction des Lignes Electriques aöriennes. Cours compl6fc$ par_ j > 

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6245 Davidson, G., Report on the Micrometer Screw. Measurement of the ir^guiarity 

 in one turn a. relative value of each turn. Washington (Rep. U. S. CeaWäWeod. - t} 

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6246 Dnnkerley, S., On the Whirling and Vibration of Shafts. London. ^T^asn^'-Jloy. 

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6247 FacciOÜ, A., Teoria del Volo e della Navigazione aerea. Ricqrehe ^BäÄpÖitalfef-» 

 sulla resistenza dell' aria; teoria delF elice e del timone. Milarto 4-894. ipn$. gr. 

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6248 Feliü y Perez, B. , Influencia de la Filosofia en la coastituciön 4« la / FiSica. 

 Barcelona 1894. 4. 24 pg. ► .* .8.^ 1so 



6249 Gernhardt, V., Bestimmung latenter VerdampfungsWärmeii .fezKetoiiSg^eteei;) 

 molekularer Siedepunktserhöhungen nach der Siedemethodet i Ertea^n' ,1)893. 



8. 46 pg. fithnjorn Jo'l-iii saJßlq G 



6250 GibbingS, A. H., Dynamo Attendants and their Dynainos.,, London; 18_94. T $qc5i8 pg< : ^ 

 w. illustrations. cloth. ,\nnS\hW. vib okbirfoüüt) jws ^ 20 



6251 Gilbert. — Schnaase, L., Gilbert's Phys|pl^gia . , npx fi > deftMagne^. (I T^iL,!! , 

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Naturae Novitates. Jahrg. XVI, No. l6. , ^.j fißtöl^dfr faßfi^/faßfä^pt. 



