64 



Barnard — Barnard. 



Owl nebula, Messier 97, 8 S. (67, 07). — The 

 variability of the nucleus of the planetary 

 nebula N.G.C. 7662, 16 S. (68, 08). — Observ. 

 of the Star Krueger 60, 27 S. (68, 08), 15 S. 

 (76, 16). — On the photographs of comet c 08 

 (Morehouse), 3 S. (69, 08). — The erroneous 

 results of a sterosc. combin. of photographs 

 of a comet, 3 S. (69, 09). — Photographs of 

 the planet Mars, 1 S. (71, 11). — Recent ob- 

 servations of Nova Cygni (1876), 9 S. — Micro- 

 metrical measures & focal peculiarities of 

 Nova Lacertae, 16 S. — Note on Nova Gemino- 

 rum of 1912, 2 S. (72, 12). — The variable star 

 R Cygni, 2 S. — Observat. of the variable star 

 97, 1910 Cygni, 18 S. (73, 13). — Measures 

 of the positions of faint comparison stars near 

 the variable R. Cygni, 3 S. — Measures of 

 small Stars in the Dumb-bell nebula, 5 S. (76, 

 15). — Measures of small stars in the Dumb- 

 beU Nebula (= N.G.C. 6853 = M 27), 5 S. 



— Measures of the positions of faint com- 

 parison stars near the variable R Cygni, 3 S. 



— Observat. of the double star Krueger 60, 

 15 S. (76, 16). — Naked eye observ. of Nova 

 Aquilae III, 5 S. (80, 20). — Observ. of 

 Nova Persei, 1901, 13 S. (80, 20), 4 S. (83, 22). 



— Hind's new star of 1848, 6 S. (81, 21). — 

 The variability of Nova Cygni of 1876, 5 S. 

 (82, 21). — On the light changes & other 

 peculiarities of Nova Persei No. 2 (Anderson, 

 1901), 4 S. (82, 22). 



Monthly Evenlnc Sky Map: Large promi- 

 nences on the sun's limb at the total eclipse 

 of the sun, June 8, 1918, 1 S. (12, 1918). 



Nature: Lunar phenomenon, Jan. 19, 1902, 



1 S. (66, 1902). — The great aurora of June 16, 

 1915, 1 S. (95, 15). — The naming of the minor 

 planet No. 907, Barnardiana, 1 S. (109, 22). 



Paris, Acad. C. R.: De grands mouvem. pro- 

 pres soup9onnes dans les etoiles voisines de 

 l'amas Messier 11, 1 S. (161, 1915). 



Philadelphia, Phil. Soc. Proc: Results of 

 astronom. photography pertain. to the work 

 with a Portrait lens, 13 S. (4«, 1907). — Photogr. 

 observ. of Daniel's comet, 14 S. 25 Taf. (49, 

 10). — Self-luminous night haze, 8 & 13 S. 

 (50 & 58, 11 & 19). 



Populär Astronoiny: Jupiter's 5. satellite, 

 6 S. — Photographs of Brooks' comet (Oct. 

 17, 1893), 3 S. — November meteors, 1 S. 

 (1, 1893). — Observations of the gegenschein, 



5 S. (1, 94), 11 S. (7, 99). — Transit of Mercury, 



2 S. — The great red spot & other markings 

 on Jupiter, 2 S. — The great photogr. nebula 

 of Orion, encircling the belt & Theta nebula, 

 SS. — Photographs of August meteors, 1 S. 

 — The great meteor of July 27, 1894, 1 S. 

 (2, 94). — Measures of the diameters of the 

 south polar cap of Mars in 1892 & 94; diameter 



6 polar compression of the planet, 11 S. — 

 Nova Aurigae of 1891, 2 S. — Nearer to the 

 stars, 4 S. — A new determination of the Sa- 

 turnian ball & ring system, 2 S. (2, 95). — The 

 total lunar eclipse of 1895 Sept. 3, 1 S. — 4 little 

 sky travelers, 4 S. — On the photogr. discov. 

 of comet V 92, 2 S. (.3, 95). — A micrometr. 

 determinat. of the dimensions of the planets 

 & satellites of the solar system, 17 S. — The 

 great nebula of Rho Ophiuchi & the smalness 

 of the Stars forming the groundwork of the 

 milky way, 6 S. — On the photography of 

 meteors, 4 S. (5, 97). — Note on Mr. Ever- 

 shed's paper on the gegenschein, 1 S. (7, 99). — 

 Observ. of Eros, 1 S. — Dicov. & period of 

 a small variable star in the cluster M 13 Her- 

 culis, 2 S. (8, 1900). — Total eclipse of the 

 sun in Sumatra, 18 S. (9, Ol). — White spot 



on Saturn, IS. — Leonid meteors at Yerkes 

 Observat., 1 S. (11, 03). — Some peculiarities 

 of comets' tails & their probable explanation, 

 5 S. (12, 04). — On the vacant regions of the 

 sky, 5 S. (14, 06). — Photogr. observ. of a 

 very remarkable comet, 5 S. (16, 08). — On 

 the erroneous results of a stereoscopic com- 

 binat. of photographs of a comet, 4 S. — 

 Suggestions in respect to photographing the 

 comets with special reference to Halley's 

 comet, 13 S. (17, 09). — Observ. of comet a 

 10, IS. — Photogr. observ. of Hallev's 

 comet, 1 S. (18, 10). — The conj. of Mars 

 & Saturn, 1911 Aug. 16, 3 S. (19, 11). — 

 Gale's comet a 12, 2 S. (20, 12). — The total 

 eclipse of the moon, 1913 March 21, 1 S. 

 (21, 13). — Delavan's comet, 2 S. — Encke's 

 comet; on the possibility of photographing the 

 comet at all points in its orbit, 3 S. (22, 14). 

 — Photogr. comparison of a bright nebula 

 with a dark one, & the possible luminosity of 

 Space, 1 S. — The tail of Encke's comet, 1 S. 

 (23, 15). — A small star with large proper 

 motion, 5 S. — A few astronomical events of 

 the past 50 years, 9 S. (24, 16). — The pro- 

 minences of the total solar eclipse on 1918 

 June 8, 1 S. — Nova Aquilae III, 1918, 1 S. — 

 On the reported naked eye observ. of Nova 

 Aquilae III previous to 1918 June 8, 3 S. — 

 Some remarkable small black spots in the 

 milky way, IS. — The great aurora of 1918 

 March 27, 2 S. — The gegenschein in the 

 1. half of october, 1 S. (26, 18). — The eclipse 

 of lapetus in the shadows of the ball & ring 

 sytem of Saturn, IS. — Remeasurement of 

 Hall's stars in the Pleiades, IS. — On the 

 change in the period of the variable star Bailey 

 No. 33 in M 5, 1 S. — A new variable star with 

 very long period, 3 S. — Variable stars in the 

 Cluster M 11, 2 S. — Note on the color of Nova 

 Aquilae III, IS. — The gegenschein & its 

 possible origin, 4 S. — The gegenschein or 

 counterglow, IS. — On the varnishing of 

 astronomical negatives, 3 S. (27, 19). — Ob- 

 serv. of the present disappearance of the rings 

 of Saturn, IS. — Probable explanat. of the 

 apparent elongat. of the gegenschein, IS. — 

 Sherburne Wesley Burnham, 16 S. (29, 21). — 



Proc. of the Amer. Assoc. for the Advancem. 

 of Science: Development of photography in 

 astronomy, 33 S. (47, 1898). 



Publicat. o! the Amer. Astron. Soc: 1 (1897 

 bis 1909): Astron. photography with small 

 lenses, 4 S. — üifference of declinat. of Atlas 

 & Pleione, IS. — Micrometr. measures of 

 stars in the great globular Clusters, IS. — 

 Photogr. observ. of Giacobini's comet, IS. — 

 Portrait lens photographs, IS. — On a quick 

 Visual method of redeterm. the focus of a 

 large visual refractor, 1 S. — On some experim. 

 in photographing enlarged Images of the pla- 

 nets direct with the 40-inch telescope, IS. — 

 Some variable stars in the cluster M 5, 1 S. — 

 Photographs of comet Morehouse, IS.— On 

 the constancy of the period of the variable 

 Star M 5, No. 33, 1 S. — On the irregularity 

 of the proper motion of the star Krueger 60, 

 IS. — Focal changes in Nova Persei & the 

 focus of some Wolf-Rayet stars, IS.— An- 

 nular nebula in Lyra, IS. — 5. satellite of 

 Jupiter, IS. — Nebulous regions of the milky 

 way, IS. — Triangulat. of Clusters, IS. — 

 Variable stars in Clusters, IS. — 2(09—13): 

 On the accelerat. of the receding masses in the 

 tail of Halley's comet, 1 S. — Report on the 

 Honolulu photographs, of Halley's comet, 2 S. 

 Photogr. observ. of Brooks' comet, 1911, 1 S. 



