Processes observable in the photosphere during the formation of an active region. 3

Processes visible during several impulses of new sunspot formations at the periphery of an older large background magnetic field body in which one rotation earlier the large June-July 1974 proton-flare region developed are discussed. The coalescence of separate nuclei into the future umbra and the counter-clockwise rotation of the whole leading region, the change in the sense of rotation during its further development as well as the non-simultaneous development of individual parts of the active region are pointed out. (author)