Carinae,[121] Merrill’s “iron star,”[122] Z Andromedae,[123] and[124] B. D.+11°4673. The conditions under which bright lines appear vary so widely that a single theory is manifestly inadequate to account for the phenomenon in every case.

FOOTNOTES:

[92] Ap. J., 59, 197, 1924.

[93] Ibid.

[94] H. H. Plaskett, Pub. Dom. Ap. Obs., 2, 258, 1923.

[95] C. G. Abbot, Ap. J., 60, 87, 1924.

[96] Baillaud, C. R., 178, 1604, 1923.

[97] The Sun, 1911.

[98] Potsdam Pub., 66, 1913.