The colour of the nebulous stars

[1] *MOUNT WILS OBS, CONTR MOUNT WILS OBS, V187

[2] SEARES, 1919, P NATL ACAD SCI, V5, P232

[3] SEARES, 1916, P NATL ACAD SCI, V2, P521

[4] SEARES, 1917, P NATL ACAD SCI, V3, P29

[5] 1791, PHIL T, V81, P71

[6] 1915, ASTROPHYSICAL J, V41, P206

[7] 1912, COLLECTED SCI PAPERS, V1, P415

[1] *MOUNT WILS OBS, CONTR MOUNT WILS OBS, V187

[2] SEARES, 1919, P NATL ACAD SCI, V5, P232

[3] SEARES, 1916, P NATL ACAD SCI, V2, P521

[4] SEARES, 1917, P NATL ACAD SCI, V3, P29

[5] 1791, PHIL T, V81, P71

[6] 1915, ASTROPHYSICAL J, V41, P206

[7] 1912, COLLECTED SCI PAPERS, V1, P415