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00 Clear space 00 Perhaps absorption lines affected lines angle angstroms appear bisections bright line bright spaces Broad line coincide collimator Diffuse disc Displaced to red Doppler shifts estimate Fe line Fowler Fraunhofer lines Hale and Adams hydrogen line Ill-defined images intensified Intensity in spot Intensity in sun iron lines Kodaikanal limb Lines in Spot Measured normal solar spectrum number of lines Obliterated Observatory Bulletin obtained OOONd oooo outer limits penumbra photographs photosphere spectrum Plate of June pressure shift prism Probably a line radial motion red side relative intensities relative pressure Remarks reversing layer rotation Rowland ruled surface Shading solar line spark lines spectra spectrograph slit spectroheliograph spectrum lines spot band spot centre spot lines spot spectrum sunspots surrounding photosphere Table I.ócont telluric lines umbra umbral gases violet side Visible on Higgs water vapour lines wave-lengths weakened lines widened in spots wrongly identified Zeeman effect