24 
ASTRONOMY: F. G. PEASE 
FIG. 3. DIAGRAM SHOWING THE LENGTH AND POSITIONS OF SLIT ON THE NEBULA 
TABLE 2 
SECTION OF SPECTRUM 
5th, below 
4th 
3rd 
2nd 
1st 
Nucleus. . 
1st, above 
2nd 
3rd 
4th 
5th...... 
Mean . . 
RADIAL VELOCITY 
NUMBER OF LINES 
km. 
-293 
3 
297 
4 
306 
7 
291 
5 
284 
6 
291 
9 
300 
8 
299 
6 
302 
6 
306 
4 
-297 
5 
-297 
Both spectrograms show a solar-type spectrum entirely free from bright 
lines. Mr. W. P. Hoge assisted in the guiding during the long exposures. 
1 Pease, F. G., Pub. Astr. Soc. Pac, San Francisco, Cat., 27, 1915, (134). 
2 This paper following. 
3 Slipher, V. M., Pop. Astr., Norlhfield, Minn., 23, 1915, (21-24), pa^e 23. 
