A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 206
perpendicularly to each other. 458. Annular Nehulce are those that exhibit the formof a ring. Of these, but few specimens are known. Oneof the most striking may be found about 6° below Mizar, 455. WThat are resolvable nebula)? How when seen through powerfultelescopes ? 456. Irresolvable nebula) ?… … NjSBUL.E. 203 the middle star in the tail of the Great Bear. Itconsists of a lar^e and ANNULAR NEBULAE.
Astronomy
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