Ebook Whirlwinds and Dust-Storms of India

The (solar) spots, in this, view of the subject, would come to be assimilated to those regions of the earth's surface, in which for the moment hurricanes and tornadoes prevail. The upper stratum being temporarily carried downwards, displacing by its impetus the two strata of luminous matter beneath (which may be conceived as forming an habitually tranquil limit be tween the opposite upper and under currents) the upper, of course, to a greater extent than the lower, and these wholly or partially denuding the opaque surface of the sun below.