Limb center variations of some fifty faint Fraunhofer lines were measured for cosθ=1.0, 0.8, 0.6, 0.4, 0.3, and 0.2, and it was found that, statistically, lines with η decreasing more rapidly with depth show stronger limb strengthening as compared with those with η of slower decrease. Limb center variations were calculated for three types of η variation at λ5100A, and they were compared with those measured by Adam.

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Contours of H41_ε, H, and K lines in flares and flocculi were observed at the tower telescope of the Tokyo Astronomical Observatory. In one of the flare spectra H_ε line is well fitted by a Doppler contour with half-width 0.44 A, which corresponds to an electron temperature of 70, 000°, while H and K lines are fitted by the contour which is the superposition of the natural damping wing and the Doppler core with its half-width 0.070 A. Analysis of K line contour in flocculi yields the Doppler core of the same width, suggesting strongly that the electron temperature of the enhanced layer is of the order of 70, 000°. The enhanced layer extends from the base of the chromosphere up to 10, 000km for normal flocculi, but the layer seems to be lifted by several thousand kilometers over sunspots. Vertical extension of the flare layer must be much larger than that of flocculi.

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