Hall — Hall. 



487 



ches solaires, 15 S. 



London, Astron. 



opportunities for 



Chicago, Yerkes Obs. Ann.: The spectra of 

 Stars of Secchi's fourth typei) ^), 36 S. (2, 1904). 



— The Rumford spectroheliograph of the 

 Yerkes Observatory^), 26 S. — The spectrum 

 of the high potential discharge betw. metallic 

 electrodes in liquids & in gases at high pres- 

 sures"), 40 S. (3, 07). 



Franklin Inst. Journ.: Nat, research Coun- 

 cil: basis of organisat. & means of co-operat. 

 with State counc. of defense, 1 S. (183, 1917). 

 Journ. de Phys.: L. champs magnet. d. ta- 

 (8, 1909). 



Soc. Month. Xot.: Some 

 astronomica] werk with 

 inespensive apparatus, 17 S. (68, 1907/08). — 

 Celestial photographs taken at Mt. Wilson 

 Solar Observat., California, 2 S. (70, 09). — 

 The angular diam. of a Orionis, 1 S. (81, 21). 



— Invisible sun-spots, 2 S. (83, 22). 

 London, Roy. Instlt. Proc: Solar vortices 



& magnetie fields, 16 S. (19, 1909). 



London, Roy. Soc. Proc: The nature of the 

 H flocculi & their structure at different levels 

 in the solar atmosph.i), 13 S. (83, 1909). — 

 Nature of sun-spots, 3 S. (95, 19). 



London Times: One-hundred-inch telescope 

 of the Mt. Wilson Obs. (1921). 



Mt. Wilson Obs.. Monthly not.: Photogr. 

 taken with the 100-inch reflector, 4 S. (80, 

 1920). — Angular diam. of a Orionis, 2 S. (81, 

 21). — Invisible sun-spots, 2 S. (82, 22). 



Xat. Acad. ot Sei. Proc: Attempt to measure 

 the free electr. in the sun's atmosphere"), 5 S. 



— Direct. of rotat. of sun-spot vortices, 3 S. — 

 Vortex experim. bearing on the nature of sun- 

 spots & flocculi*), 5 S. (1, 1915). — Minute 

 structure of the solar atmosphere^), 7 S. 

 (2, 16). — Invisible sun-spots, 3 S. (8, 22). 



Nature: Some tests of the 100-inch Hooker 

 telesc, 3 S. (105, 1920). 



Philadelphia, Phil. Soc. Proc: Solar magnetie 

 phenomena, 5 S. (53, 1914). 



Physica: Astrophys. aspects of the Zeeman 

 effect, 5 S. (I, 1921). 



Physik. Zoitschr.: Einige Gelegenh. zu astron. 

 Arbn. m. wohlfeilen App., 13 S. (10, 1909). 



Populär astron.: Reflect. on the progr. of 

 astrophysics, 9 S. ('24, 1916). — Probable 

 absence of a measurable electric field in sun- 

 spots, 2 S. (29, 21). 



Popul. sei. monthly: Development of a new 

 method of research, 22 S. (6.5, 1904). — Earth 

 & sun as magnets, 20 S. (83, 13). 



Science: Nat. acad. & progr. of scientif. 

 research, 18, 12, 13 & 11 S. (38 — 11, 1913—15). 



— Industr. research & nat. welfare, 3 S. (48, 

 18). — Responsibilities of the scientist, 4 S. 

 (50, 19). — Joint investig. of the constit. of 

 matter & the nature of radiat., 3 S. (55, 22). 



Scrlbner's Magazine: New heavens, 16 S. 

 (68 & 71, 1920 & 22). — Giant stars, 13 S. — 

 Cosmic crucibles, 15 S. (70, 21). — Depths of 

 the universe, 16 S. (71, 22). — Nat. focus of 

 sei. & research, 17 S. (72, 22). 



Smithson. Miscell. Collect.: Contribut. to our 

 knowledge of the sun, 30 S. (52, 1909). 



Smitson. Report: Stellar evolut. in the light 

 of recent research, 15 S. (1902). 



Soc. deeil Spettroscopisti Ital. Mem.: The H 

 flocculi as photogr. with the & Ha &Kd lines, 

 2 S. (37, 1908). 



Tecbnol. Review: Nat. value of scientif. re- 

 search, 1 S. (18, 1916). 



Terrestr. Maenetism: Attempt to detect the 

 general magn. field of the sun, 6 S. (17, 1912). 



Mit ») F. Ellennan, «) J. A. Parkhurst, ») W. S. 

 Adams, ♦) P. Fox, «) N. A. Kent, •) G. Gale. ') H. D. 

 Babcock, «) G. P. Luckey, ») F. H. Seares, ") A. Van 

 Maanen, ") S. B. Nicholson, ") A. H. Joy. 



Siehe H. G. Gale. 



™ Hall, Asaph. Dr. phil. Clinton; 

 war Prof., Math., U. S. Navy; * 1829, 

 tl907. Nov. 22, Annapolis, Md. — (Nachr. 



V. Baklund 1 S. in St. Pet. Ak. Bull., 



VI, 2, 1908, V. Hill 2 S. in Silliman 

 Amer. Journ., 175, 08, & v. Eichel- 

 berger 1 S. in Astron. Nachr., 177, 07.) 



Astron. Journ.: Nebular hypothesis of La- 

 place, IS. — The masses of Mercury, Venus & 

 the earth & the solar parallax, 1 S. (24, 1904/05). 



— Relat. of the true anomalies in a parabola 

 & very eccentric ellipse having the same perihe- 

 lion distance, 2 S. — Pontecoulant's Lunar 

 theory, IS. — Diff. equat. of disturbed ellip- 

 tic mot., 3 S. — /n' Herculis, IS. — Stellar par- 

 allax, 1 S. (25, 05/07). 



London, Astron. Soc. Month. Xot.: On elliptic 

 mot., 3 S. (64, 1903/04). 



Pop. Astron.: Elliptic mot., 10 S. — Deter- 

 minat. of orbits, 9 S. (13, 1905). 



Science: Lunar theory, 1 S. (19, 1904). — 

 Mathematics & metaphysics, 1 S. (20. 04). 



Washington, Biosr. Mem. Nat. Acad.: Biogr. 

 memoir of John Rodgers 1812—82, 2 S. (6, 

 1906). 



Hall, Charles Martin; ausgebildet am 

 Oberlin-Coll.; bekannt durch die 1886 

 gelung. elektrolyt, Gewinnung v. Alu- 

 minium, erbaute am Niagara & in Kanada 

 Anlagen, Vize-Präs. d. Alum. Comp, of 

 America, erhielt 1911 die Perkin-Med.; 

 * 1863, Ohio, t 1914, Dez. 27, Daytona, 

 Florida. 



^ Hall, Edwin Herbert, Dr. phil. 

 1878 Baltimore; seit 1895 Prof., Physik, 

 Harvard Coli., Cambridge, Mass. : * 1855, 

 Nov. 7, Gorham, Maine. 



Elementar}' lessons in physics, New York 1900. 



— The teaching of chimistry & physics^), 

 377 S., New York 02. — Boltzmann-Festschr. : 

 The van der Waals a in alcohol & in ether, 5 S., 

 04. — College laboratory manual of physics, 

 New York 04. — 



Boston, Amer. Acad. Proc: Exper. on the 

 deviat. of falling bodies, 15 S. (39, 1903—04). 



— Measurem. of various thermal & electr. 

 effects, especially the Thomson effect, in soft 

 iron^) 3) *), 36 S. — Thermo-electric hetero- 

 geneity in certain alloys, especially german- 

 silver») *), 34 S. (41, 05—06). — The Thomson 

 effect & the temper. coeff. of thermal conduc- 

 tiv. in soft iron betw. HS" & 204» C.^) 3) *), 

 32 S. (42, 06—07). — Air resist. to falling inch 

 spheres, 8 S. (45, 09 — 10). — The electromagne- 

 tic & the thermomagnetic transverse & longi- 

 tud. effects in soft iron^), 46 S. (46, 10—11). — 

 On electric conduct. & thermoelectric act. in 

 metals, 40 S. (.50, 15). 



Xuovo Cimento: Una possibile spiegazione 

 del fenomeno di Hall & del fenomeno di Et- 

 tingshausen, 8 S. (9, 1915). 



Washington, Proc. Acad.: Inferences from 

 the hypothesis of dual electric conduct.; the 

 Thomson effect 16 S., — The Thomson effect 



