The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 342
to a slight extent,vaporized, and out of this vapor is formed the coma and thetail. That some evaporating process is going on from the nucleusof the comet is proved by the movements of the tail. It isevident that the tail cannot be an appendage carried along withthe comet, as it seems to be. It is… … again, as a comet is passing its perihelion, the tail appears tobe whirled from one side of the sun to another with a rapiditywhich would teai it to pieces if the movement were real. Thetail seems to be, not something attached to the comet, andcarried along with it, but a stream of vapor issuing…
Astronomy
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