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Figs. 18-19
Plate IV.
DIAGRAM.
TO ILLUSTRATE THE RECOGNITION OF A COMET AS
DISTINGUISHED FROM A NEBULA.
BROOKS'S COMET (1893, iv.). October 21.
p. 30.
DIAGRAM.
TO ILLUSTRATE THE RECOGNITION OF A COMET AS
DISTINGUISHED FROM A NEBULA.
BROOKS'S COMET (1893, iv.). October 21.
