Abstract
The stellar distribution for the section of the Milky Way in Sagittarius, l = 325° to 330°, b = 0° to - 10°, is contrasted with that for the Carina section, l = 250° to 263°, b = -5° to +5°. The Sagittarius section appears to be almost pure Population II, with a thin overlying Population I structure, whereas the Carina section is as completely Population I as one finds anywhere along the galactic circle. For the Sagittarius section, attention is drawn to the concentration of cosmic dust at distances mostly less than 2000 parsecs from the Sun. It is also noted that the section of the southern spiral arm in Sagittarius-Scorpio is viewed against the obscured part of the Milky Way between b = -3° and +3° and no parts of it are seen projected against the bright Milky Way Band at b = -4° to -6°. For the Carina section, we note the abundance of OB stars and associated emission nebulosity, and also the presence at l = 250° to 263° of a bridge of high-density for the A stars between our Sun and the point at 1500 parsecs or more from the Sun where the most marked spiral structure prevails.
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