THE DIFFERENTIAL ROTATION OF THE RED SOLAR CORONA (FE-X-6374-ANGSTROM) FROM 1957-1994

A series of observations of the intensity of the solar corona in the F e X 6374 Angstrom line is analyzed. The series primarily includes data from the Kislovodsk Station, supplemented with data from the Sacramen to Peak and Pic du Midi observatories. The dependence of the different ial rotation velocity on the phase of the solar-activity cycle is conf irmed: at the cycle minimum, the rotational velocity of the equatorial regions is maximum and the latitude dependence of the differential ro tation velocity increases. A latitude-time diagram of zones with slow and fast differential rotation is constructed, on which waves of devia tion of the differential rotation velocity from the mean values can be traced; the waves travel from the poles to the equator. In 1965-1995, the mean values of the coefficients a(0), a(1), and a(2) in the expan sion w = a(0) - a(1)cos(2)(theta) + a(2)cos(4)(theta) grow from cycle to cycle.