Otto Struve	Charles A. Young	.	.
FIG. l-49	FIG. l-50	.	.
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	.	.
.	.	.	.
FIG. n-13	FIG. n-14	FIG. n-15	FIG. n-16
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
.	.	.	.
FIG. n-17	FIG. n-18	FIG. n-19	FIG. n-20
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific
.	.	.	.
FIG. n-21	FIG. n-22	FIG. n-23	FIG. n-24
by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific	by: The Astronomical society of the Pacific