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June 10, 1899.

[[Greek letter psi]]8472 [[?]][[subscript]]2 [[superscript 4]][[?]] [[Greek letter gamma]] Velorum,
Class [[?]]O a Pec[[/?]]
On superposing this image on [[Greek letter psi]]7505 and [[Greek letter psi]]8513, I see no differences except that the latter plate is isochromatic and shows the red end
The spectrum has been measured and described from [[Greek letter psi]] 8513.