Glass positive of Hubble's classification of Nebulae (Extra-galactic, elliptical and irregular). Shows: E.0.N.G.C.3379; E.2.N.G.C.221 (M.32); E.5.H.G.C.4621 (M.59); E.7.N.G. C.3115; N.G.C.3034 (M.82); N.G.C.4449. Plate XIV Mount Wilson Contribution No.324. 12"x15" . Prepared from celluloid positive lent by Sir James Jeans. Glass positive of:- Hubble's classification of Neb
Spiral Nebula in Pisces; M.74. N.G.C.628. R.A., 1h 36m. Decl., + 15 degree 15'; E.P. Hubble, Mount Wilson Observatory, 1920; 60-inch Reflector; focal length, 299 in. exposure, 4 hours Spiral Nebula in Pisces; M.74. N.G.C.628. R.A.