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[[preprinted]] 4 [[/preprinted]] April 16, 1898 X 8119 [[subscript]] 3 [[/subscript]] epsilon Orionis 64 Orion lines ^[[from lambda 5023 - lambda 3819]] are identified from Table [[IV or II?]] in val XXVII. The principal ones are marked on this plate. There appears to be a slight difference between the lines seen here and given in table at the region of wave length 4144-4200. ^[[image- sketch or equation]] This represents the approx. position of the lines in region of lambda 4144 and of longer lambda. The numbers are the scale - ^[[(mm. scale D1339 used)]] readings. Thus the first line is about 2 of the smallest scale divisions from 4144, the next, about 4.9, etc. The line marked 11 seems the 4200. All these lines are faint. [[end page]] [[start page]] [[preprinted]] 5 [[/preprinted]] April 16, 1898 X 8119 epsilon Ori. (cont.) The line at 4.9 (see prec. drawing) is rather well-marked in alpha Pav. X7903. It is likely the line 4169.2 and there is another line very near 4186.2 not given in Table IV. X 7911 [[susbscript]] 3 [[//subscript]] [[superscript]] 4 [[/superscript]] beta Centauri compared w. in epsilon Orionis (See also Bk III p. 178.) As these two stars are typical respectively of B2A & B stars it is well to note their difference exactly. In beta Cent. there seems to be a faint line near 4925 of longer lambda.
Transcription Notes:
sine wave = upside down y mathematical symbol
cursive letter comparison throughout document.
Shorthand for wavelength is a "lambda'
Also an "X" referring to Book X, not a Greek letter. As per plate curator at Harvard.