A NEW METHOD OF RESEARCH.
23
the comparatively small width of the hydrogen lines, that it will become possible to secure photographs corresponding to different elevations,
| N | ||
 | ||
| E | Fig. 10.—3h 57m. Calcium Flocculi, K2 Level. Slit at λ 3933 8. | W |
 | ||
| S | ||
| Fig. 11.—11h 0m. Hydrogen Flocculi. Slit at Center of Hy. (Bright Eruptive Flocculi West of Spot.) | ||
| Hydrogen and Calcium Flocculi, 1903, July 7. (Scale: Sun's Diameter's 0.290 Meter. ) | ||
just as has been done for calcium with the broad H and K bands. This would permit the lower regions to be differentiated from the
