The evidence is reviewed for the existence of vertical and horizontal movements in the bright Hα emission of chromospheric eruptions. 187 measures of line-width, made upon 22 eruptions, show a red-shift increasing with line-width and visual intensity. The value is about +0.3 A. for the brightest eruptions. The measures have been made in all cases upon the wings of the emission line and are relative to the centre of the Hα absorption line for the surrounding field. The data do not appear to favour a Doppler interpretation. The suggestion is made that the observed red-shift arises from increased absorption on the violet side of the emission line, which may have its origin in the general expulsion at high velocity of absorbing matter from the eruption as centre. Line-width measures have been plotted, as a function of time, during the progress of 10 eruptions. These curves indicate the same general sequence of events for all eruptions−a rapid rise to maximum brightness and line-width followed by a slow decline, the durations of rise and fall being in the ratio of about 1 to 4. In two Class III eruptions fluctuations of line-width have occurred after the peak value. The question of horizontal movements in the bright emission is discussed, and it is concluded from observations on 95 eruptions that, while the displacement caused by a steady velocity of 1 km./sec. could be easily seen and measured in favourable cases, no such movements have been certainly observed.