986 



Plotnikow 



Plummer. 



3 S. (31, 1906). — Gaometr. Beweis eines al- 

 gebr. Satzes, 3 S. (33, 07). — D. fokalen Dreh- 

 flächen 2. Grades, 2 S. (39, 14). — Art d. Er- 

 zeugg. d. Kegelschnitte, 6 S. (41. 16). 



Zeltschr. f. matli. & naturw. Unterr. : Be- 

 merkg. zur Lösg. d. quadrat. Gleichgn., 4 S. — 

 Berechng. d. Parabelfläche, 2 S. (35, 1905). — 

 Ein elementarer Beweis d. Pascalschen Satzes 

 für d. Kreis, 2 S. (43, 12). 



Plotnikow, Ivan, Dr. pliil. 1905 

 Leipzig, Dr. ehem. 10 Moskau; stud. 

 1897—1901 Moskau, 01—06 Leipzig; 

 12 Prof. & Dir., anorg. phys.-chem. & 

 photochem. Instit., Univ., Moskau, 19 

 Leiter, photochem. Forschgslabor., Agfa, 

 Berlin, jetzt Prof., phys. Chemie, & Dir., 

 Instit., Techn. Hochsch., Zagreb; * 1878, 

 Nov. 22 (a. St.), Tambow, Rußl. (Eig. 

 Mitt.) 



Erfindg. : Konstrukt. einer Anzahl Apparate d. 

 Photochemie. 



Photochemie. 160 S., Halle 1910. — Photo- 

 chem. Versuchstechnik, 371 S., Leipzig 12. — 

 D. photochem. Valenz & d. Lichtempfindlichk. 



d. Körper, 32 S., Berlin & Leipzig 20. — All- 

 gem. Photochemie,..14 -f 729 S., 1 Taf., Berlin 

 & Leipzig 20. — Üb. Sonnenkraft (kroatisch), 

 Zagreb 21. 



Journ. f. prakt. Chemie: Bemerkg. z. d. Be- 

 richtigg. V. E. Deussen, 1 S. (87, 1913). 



Physik. Zeitschr.: D. Erweichen & Biegen 



e. Kohlenstabes bei sehr hohen Temp., 1 S. 

 (19, 1918). 



Ru88. Phys.-Chem. Ges. Journ.: Bestimmg. 

 d. Avidität d. Phenols nach thermochem. Meth., 

 10 S. (33, 1901). 



Zeitschr. f. Elektrochemie: Beziehg. zw. 

 d. logarithm. Temp.konstante & d. Wärme- 

 töng. Antwort an Pr. Auerbach, 2 & 1 S. (11, 

 1905). — D. spektrale Verteilg. d. Licht- 

 empfindlichk. bei Lichtreaktn., 2 S. (19, 13). 



Zeitschr. f. physik. Chemie: Ostwald: Gesetz- 

 mäßigk. in d. ehem. Dynamik, 6 S. (51, 1905). 

 — Reaktsgeschwindigk. bei tiefen Temp., 28 S. 

 (53, 05). — Photochem. Oxydat. v. HI durch 0, 

 31 & 14 S. (58 & 64, 07 & 08). — Photochem. 

 Studien; I: Oxydat. d. Jodoforms durch O. 

 II: Klassifikat. d. Lichtreaktn., 60 S. 

 (75 — yy, 11). — III: Räumlich fortschreitende 

 Lichtreaktn., 66 S. (75—78, 11—12). — IV: 

 Photochem. Temp. -Koeffizienten v. Br. V: Licht- 

 absorptsmessgn. an färbst.- & Br-Lösgn. 

 VI: Spektrale Verteilg. d. LichtempfindHchkeit 

 V. Br, 111 S. (75—79, 11—12). 



Zeitschr. f. wisscnsch. Pliotogr. : Photochem. 

 Studien. Photochem. Br-Additsgleichgewichte. 

 Period. Lichtreaktn. D. Photooxydat. d. or- 

 gan. Verbindgn. durch Chromate. D. mathe- 

 mat. Theorie d. photochem. Kinetik, 21, 18, 

 17 & 58 S. (19, 1919/20). — Neues Modelleines 

 Kippstatives für Balyröhren, 1 S. (20, 21). — 

 Parbenlichtthermostate, 2 S. (21, 20/21). — 

 Photochem. Studien; XI— XVI, 30, 15, 17, 7, 2 

 & 7 S. (20— 33, 20—23). 



Siehe Hob. Luther. 



IV Plummer, Henry Cr., M. A. 1900 

 Oxford; 12—20 Andrews-Prof., Astron., 

 Univ., Dublin, Dir., Dunsink Observ., 

 Dublin, Irland, seit 20 Prof., Math., 

 Artill.-Coll., Woolwich; * 1875, Okt. 24, 

 Oxford . 



An introductory treatise on djmamical astro- 

 nomy, 343 S., London & New York 1918. 



Astron. Nachr.: The latitude problem w. 

 3 relative altitudes, 1 S. (193, 1912). 



California, Llck Obs. Bull.: The mots. of 

 the brighter stars of class A in relat. to the 

 milky way, 11 S. (7, 1912/13). 



Chicago, Astrophys. Journ,: Determinat. 

 of the orbits of spectroscopic binaries, 11 S. 

 (38, 1908). 



London, Astron. Soc. Month. Not.: The 

 Images formed by a parabolic mirror. II: Infi, 

 on the measurem. & reduct. of a photograph, 

 10 S. — Jacobi's meth. of facilitating the nu- 

 merical solut. of equats. arising in the theory of 

 secular perturbats., 6 S. (63, 1902/03. — 

 The optical distort. of the microscope of one 

 of the Oxford machines for measuring astron. 

 photographs, 4 S. — The infl. of the plate con- 

 stants on the accuracy of the posit. of an object 

 measured on a photograph, 3 S. (64, 03/04). — 

 On the use Mr Aldis' tables of the f unct. ^/g ( Q 

 + cos 0) in determining the Clements of an or- 

 bit, 9 S. — On oscillatory satellites, 8 & 8 S. 

 (63&64, 02— 04).— The posits.of 70 stars in the 

 Cluster M 13 Herculis, 4 S. (65, 04/05). — The 

 possible effects of radiat. on the mot. of comets, 

 w. special reference to Encke's comet, 8 S. — 

 The coelostat & siderostat, 15 S. — On point dis- 

 tributs. on a sphere, w. some remarks on the 

 determinat. of the apex of the sun's mot., 6 S. 



— The great Cluster in Hercules, 13 S. (65, 

 04/05). — On the mot. about an attracting 

 centre of slowly increasing mass, 2 S. — Some 

 points connected w. the determinat. of orbits, 

 7 S. (66, 05/06). — The effects of radiat. on the 

 mot. of comets, 4 S. — A mechanical solut. of 

 Kepler's equat., 3 S. (67, 06/07). — The relats. 

 betw. posit. angle & dist. & Standard (photogr.) 

 coordinates, 6 S. — Some remarks on Lam- 

 bert's theorem, 10 S. — A meth. for the reduct. 

 of comet photographs, 4 S. — On correlat. & 

 the characters of variable stars: in reply to 

 Prof. Karl Pearson, 7 S. — The calculat. of 

 stellar aberrat., 3 S. — Observed time of mini- 

 mum phase of an Algol variable star, 3 S. — 

 The theory of aberrat., 13 S. (69, 08/09). — 

 On correlat. & the characters of variable stars : 

 a second reply to Karl Pearson, 8 S. — Aberrat. 

 day numbers for 1910, 6 S. — The theory of 

 aberrat. & the principle of relativity, 14 S. — 

 The principal formulse of interpolat. & mecha- 

 nical differentiat. & integrat., 10 S. (70, 09/10). 



— The problem of distribut. in globular star 

 Clusters, 11 S. — Observats. of a Orionis by 

 the late Joseph Baxendell, F. R. S. ; together 

 w. the magnitudes deduced fr. the observat. 

 of J. Herschel & of Argelander, 12 S. (71, 

 10/11). — Hypothetical parallaxes of the 

 brighter stars of type A, 6 S. — The mots. & 

 dist. of cert. stars of the types B 8 & B 9, 8 S. 

 (73, 11/12). — The short period variable SU 

 Draconis, 8 S. — The mots. & dist. of the bright 

 stars of the types B — B 5 (Stellar mots. No. 4), 

 18 S. — Preliminary discuss. of the galactie 

 mots. of the bright stars of type I, w. some ad- 

 ditional material (St. mots. Nr. 5), 21 S. (73, 

 12/13). — The mots. & dist. of the Pleiades & 

 other groups of stars (St. mots. Nr. 6), 8 S. — 

 On variable stars of Cluster type, 9 S. — Orbit 

 of f Geminorum, 6 S. (73, 12/13). — The velo- 

 city of light & Doppler's principle, 4 S. (74, 

 14). — Occultats. of the Pleiades, 1914 dec. 1 

 & 28, 3 S. — On errors of measurm., 3 S. (75, 

 15). — Note on Prof. Dale's meth. of periodic 

 analysis, 3 S. — The distribut. of stars in glo- 

 bular Clusters, 14 S. — The mots. & dist. of the 



