CHAPTER XI

RECENT COMETS--(_continued_)

Forms of Comets' Tails--Electrical Repulsion--Bredikhine's Three Types--Great Southern Comet--Supposed Previous Appearances--Tebbutt's Comet and the Comet of 1807--Successful Photographs--Schaeberle's Comet--Comet Wells--Sodium Blaze in Spectrum--Great Comet of 1882--Transit across the Sun--Relation to Comets of 1843 and 1880--Cometary Systems--Spectral Changes in Comet of 1882--Brooks's Comet of 1889--Swift's Comet of 1892--Origin of Comets 345