. The service of security and information. SECURITY AND INFORMATION. S Sun. r& Orientation by observing the moon is more difficult andnot very reliable; it depends upon the quarter in which themoon happens to be. The full moqn is in the east at 6 oclock in the evening,in the south at midnight, and in the west at 6 oclock in themorning. The moon in the first quarter is in the south at 6 oclockin the evening, and in the west at midnight. The moon in the last quarter is in the east at midnight,and in the south at 6 oclock in the morning. These indications, except the first, may vary an hour or


. The service of security and information. SECURITY AND INFORMATION. S Sun. r& Orientation by observing the moon is more difficult andnot very reliable; it depends upon the quarter in which themoon happens to be. The full moqn is in the east at 6 oclock in the evening,in the south at midnight, and in the west at 6 oclock in themorning. The moon in the first quarter is in the south at 6 oclockin the evening, and in the west at midnight. The moon in the last quarter is in the east at midnight,and in the south at 6 oclock in the morning. These indications, except the first, may vary an hour orso earlier or later. The moon in the first quarter has the concavity to theleft. In the last quarter the concavity is to the right. ORIENTATION BY INDICATIONS. 239 Orientation by observing the North Star is one of the easi-est methods. In whatever position the constellation of theGreat Bear, or the Dipper, may be, the line joining the point-ers will, if prolonged to about six times its length, passnearly through the North Star, which can be readily recog-nized by its brillianc


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Keywords: ., bookcentury1800, bookdecade189, booksubjectmilitaryartandscience