Winchell, Alexander, 1824-1891 · Chicago, S.C. Griggs and company · leaf 118
us, Ixv, p. C43,Ixvi, 63. X F. Abbot, Proc. Roy. Astron. Soc, Nov. 13,1863; Am. Jour. Set., II. xxxvii,294-6. § Holden: On Supposed Changes in Nebula M. 17, Am. Jour. Sci., Ill, xi, 341-61, May, 1876. NEBULAR HEAT. 89 drawings of this nebula, from that of Herschel in 1833to that of Lasell in 1862… … Fig. 16.—The Omega Nebula. Fuom a Drawing by Lasell in 1862. contiguity to it. Professor Holden says: These draw-ings show that the western end of this nebula has movedrelatively to its contained stars from 1833 to 1862, andagain from 1862 to 1875, and always in the same direc-tion. Meantime the…
Nebular hypothesis · Cosmogony
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