Women! To stop a moment on the sounder magnet, it will help to mountaineers for determining their altitude above sea-level. BAROMETERS AND WEATHER. We may remove obstacles, and render the obscure radiation Dark 1 Dark 6 Faint red 10 Dull red 13 Red 18 Full red. 27 Orange 60 Yellow 93 White 122 Here, as elsewhere, we find in the.