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In the preliminary report of an expedition to the south limit of totality, in Algeria, I described in detail the methods adopted and the instruments employed in obtaining photographs of the “flash” spectrum in high solar latitudes. The present paper deals with the results obtained from a detailed study and measurement of four of the best negatives of the series of sixteen which were secured with the principal instrument, a reflecting prismatic camera.

XII. Solar eclipse of 1900, May 28.—General discussion of spectroscopic results