THE STRUCTURE OF THE NUCLEUS. 



69 



TABLE 8.— SUMMARY OF DATA FOR CORONAL AND AXL-VL COLORS. 



MEAN VALUES. 



b = .1. For coronas (globe, 30"" diam.), >■ (corrected density ratio) — .82 ; i = 1.75'"'" 



For axial colors (drum, 187 cm. long),_y = .92 ; i — 3.5""" nuclei from flowing charcoal. 



