CHAPTER V

COMETS

Predicted Return of Halley's Comet--Career of Olbers--Acceleration of Encke's Comet--Biela's Comet--Its Duplication--Faye's Comet--Comet of 1811--Electrical Theory of Cometary Emanations--The Earth in a Comet's Tail--Second Return of Halley's Comet--Great Comet of 1843--Results to Knowledge 88