610 



Kant — Kapteyn. 



Anier. Chein. Soc. Joiirii.: lonizat. of water 

 at 0", 18" & 25", derived fr. conductivity mea- 

 surements of the hydrolysis of the ammonium 

 Salt of diketo-tetra-hydrothiazole, 14 S. (29, 

 1907). 



Washington, Bur. of Stand. Bull.: Melting 

 points of some refractory oxides, 20 8.(10, 1914). 



Zeitschr. f. anor?. Chemie: Lorenz: D. 

 8chmelzp. einiger refraktärer Oxyde, 19 S. 

 (85, 1914). 



Zeitschr. f. Elektrochemie: Neuer Unter- 

 brecher für Leitfähigk.-Bestimmgn., 1 S. (9, 

 1903). 



I Kant, Immanuel; * 1724, f 1804. 



In Ostwalds Klass., Heft 12 erschien: „All- 

 gemeine Naturgeschichte & Theorie d. Him- 

 mels oder Versuch v. d. Verfassg. u. dem 

 mechan. Ursprünge des ganzen Weltgebäudes 

 nach Newtonschen Grundsätzen abgehandelt 

 (1755), hrsggeb. v. A. v. Oettingen, 158 S., 

 1898. 



"v Kantor, Seligmann; war 1883—86 

 Privatdoz., Deut. Univ., Prag, seitdem 

 Privatmann; * 1857, Dez. 6, Soborten 

 b. Teplitz. 



Vmer. Journ. of Math.: D. Typen d. linearen 

 Komplexe oUipt. Kurven im R,. . 52 8.(24, 1902). 



Archiv (1. Math. & Physik: Bidifferent. Trans- 

 formatn., 5 8. («, 1904). 



tiiorn. (11 Mateni. Battaiflini: Un errore in 

 una memoria fondamentale di Sophus Lie, 3 8. 

 (40. 1902). 



Wien. Akad. S.Ber.: E. neue Klasse ge- 

 mischter Gruppen & e. Frage üb. d. birationalen 

 Transforraatn., 87 8. — Neue Grundlagen f. 

 d. Theorie & Weiterentwickig. d. Lieschen 

 Funktnsgruppen, 60 8. — D. lin. 8yst. lin. 

 Strahlenkomplexe im Rr, 63 8. (112, 1903). 



^^ Kapteyn, Jacobus Corn., Dr. phil. 

 1875 Utrecht; war 78—1921 Prof., 

 Astron., Univ., Gi'oningen, erhielt 15 d. 

 Orden pour le merite, seit 20 Adjunkt- 

 Direktor, Sternw., Leiden; * 1851, f 1922 

 Juni 18, Amsterdam. — (Nachr. in 

 Astron. Nachr., 143 S., 216, 1922, in 

 Chicago, Astrophys. Journ., 145 S., 

 56, 22, in London, Roy. Soc. Proc, 29 S., 

 102, 22, in Berlin, Akad. S.Ber., 452 S., 

 22, in Viertelj.-Schr. d. Astron. Ges., 

 57 S., 57, 22, in Edinburgh, Roy. Soc. 

 Proc, 42, 21/22 v. R. A. Sampson.) 



Openbare les by de opening van het Sterre- 

 kundig Laborat., 19 8., Groningen 1896. — 

 Selected areas, 82 8., Gr. 1906. — First & 

 second report on the progress of the pl?.n of 

 selected aroas, 34 8., Gr. 11. — Skew frequency 

 curves in biology & statistics, 45 S., Gr. 03. — 

 On the absorpt. of light in space, Washington 09. 

 — On certain Statistical data which raay be 

 valuable in the classificat of the stars in the 

 Order of their evolut., Washington 10. — 

 Skew frequency curves (m. M. J. van Uven), 

 69 8., Groningen 16. — Durchmustergn. of 

 selected areas, Syst. Plan, I. (m. E. C. Picke- 

 ring), Howard Ann. C I, 456 8., Groningen 18. 

 Amsterdam, .Vkad. Verslag: Syst. verschillen 

 tusschen de vis. & phot. helderheid d. sterren, 

 1 S. (III, », 1892). — Over de lichtkracht der 

 vaste sterren, 32 S. (9, 1901). — Beantwoording 



der kritiek van J. Stein, 12 S. (10, 02). — De 

 parallax van nevelvlekken, 9 S. (14, 06). — 

 De gemidd. stersdichtheid, 10 8. (16, 08). — 

 De melkweg & de sterstromen, 8 8. (20, 11). — 

 Sterrenstelsels & de melkweg, 3 8. (20, 12). 



Astron. Inst, of the Netherlands, Bull.: Proper 

 mots. of ö-Cephei stars & the dist. of the globu- 

 lar clustersi), 6 8. (8, 1922). — Proper mots. of 

 the faint stars & the systematic errors of the 

 Boss fundamental syst., 10 8. (14, 22). 



Astron. Journ.: Determinat. of the number 



6 mean paraUax of stars of diff. magn. etc., 



7 8. (56«, 1904). 



Astron. Nachr.: D. Deklinat. d. Apex d. 

 Sonnenbewegg., 20 8. (161, 1903). — The lumi- 

 uosity curve, 10 8. (183, 10). — The humino- 

 sity-curve, 20 8. (183, 10). 



Bologna, Scientia: On the structure of the 

 universe, 13 8. (14, 1913) (auch in Journ. of 

 the Roy. Astr. Soc. Canada, 8). 



Chicago, Astropliys. Journ.: Absorpt. of 

 light in Space, 43 8. (29 & 30, 1909) (auch als 

 Contributs. fr. the Mount Wilson Solar Observ., 

 31, 42). — Cert. Statistical data valuable f. the 

 classificat. of stars in the order of their evolut., 

 12 S. (31, 10). — Velocity of the sun's mot. 

 through space as derived fr. the radial veloc. 

 of Orion stars (m. E. B. Frost), 8 8. — Average 

 parallax of the stars of the fourth type as com- 

 pared with that of stars of other types, 5 S. 

 (32, 10). — Individual parallaxes of the brighter 

 galactic helium stars in the southern hemisphere, 

 together w. considerats. on the parallax of 

 Stars in general, 86 8. (C. M. W., 82). — Sir 

 David Gill, 12 S. — The change of spectrum 

 & color index w. distance & absol. brightness, 

 18 8. (40, 14) (C. M. W., 83). — Device f. 

 avoiding syst, error, depending on magnitude 

 in the measurement of stellar phot., 4 S. (41, 

 15). — Parall. & mots. of the brighter gal. 

 helium-stars, 92 8. (47, 18) (C. M. W., 147). 



— The distribut. of stars in space especially 

 in the high galactic latitudes^), 16 S. (52, 20) 

 (C. M. W., 188). — The upper limit of distance 

 to which the arrangem. of stars in space can 

 at present be determined w. some conf idence^), 

 30 8. (C. M. W., 229). — First attempt at a 

 theory of the arrangem. & mot. of the sidereal 

 syst., 27 8. (55, 22) (C. M. W., 230). 



Groningen, Astron. Labor. Publ.: Proper 

 mots. of the Hyades^) »), 99 8. (1904). — 

 Trigonometrical formulare & goniometrical 

 functs. (m. W. Kapteyn), 7 S. (06). — The 

 number of stars of determined magnitude etc., 

 54 8., (08.)— Proper mots. of 3300 stars etc. 2)»), 

 170 8. (09). — List of parallax-determinats."), 

 35 8. (10). — Proper mots. of 3714 stars 

 etc.«), 60 S., 14. — Proper mots. of 2380 stars^), 

 51 S. (18). — Secular parallax of the stars of 

 diff. magn., gal. lat. & spectrum^) *), 63 S. (18). 



— The number of starö betw. def . lim. of p.-m., 

 vis.-magn., & gal.-lat. etc.i), 110 8. (20). 



Ilaarleni, Arch. Neerl.: Courants dans le 

 syst. Stellaire, 23 8. (11, 1906). — Densite 

 Stellaire moyenne ä d. distances differ. du syst, 

 solaire, 13 8. (13, 08). 



London. Astron. Sof. Month. Not.: Definit. 

 of the eorrelat.-coeffic, 8 S. — The derivat. 

 of the constants for the two star-streams*), 

 13 8. (72, 1911/12). 



.Monthly Notices Iloy. Astron. Soc: New 

 reduct. Groombridge Catalogue, 4 S. (66, 1906). 



— Definit. of the correlat.-coefficient, 8 8. 

 (72, 12). — Derivat, of the constants f. the 

 twostar-streams''), 14 8. (72. Supp., 12). 



