Total Solar Eclipse, 1901. Dutch Observations. 
Plate III. 
DIAGRAM OF EXPOSURES. 
a. Small coronagraphs. — 6, coronagraph f= 3.42 M. — c. coronagraph f= 11,77 M. — a. prismatic camera. 
The hatched spaces denote exposures in which BURCKHALTER Screens were used. 
Proceedings Royal Acad. Amsterdam Vol. [V. 
