Comets Dissolve, but Why?

We consider a satisfactory explanation of phenomena inaccessible to observation, to have been given when our account of them is free from impossibilities. The observations before us suggest the following account of the phenomena we are now considering. We know that the dry and warm exhalation is the other most part of the terrestrial world, which falls below the circular motion. Ant, and a great part of the air that is continuous with it below, is carried round the earth by the motion of the circular revolution. In the course of this motion it often ignites, wherever it may happen to be of the right consistency,. This we maintain to be the cause of the shooting of scattered stars. A comet is formed