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Figs. 71—80 Plate XXI.
COGGIA'S COMET, 1874 (iv.).
SUCCESSIVE CHANGES BETWEEN APRIL 20 AND JULY 8. (Drawn by W. Tempel.)
P. 150a.
Figs. 71—80 Plate XXI.
COGGIA'S COMET, 1874 (iv.).
SUCCESSIVE CHANGES BETWEEN APRIL 20 AND JULY 8. (Drawn by W. Tempel.)