A THERMOMETER RISES:

For change of wind towards the upper directions only. Moisture or

dampness in the air (shown by a hygrometer) increases before or with

rain, fog or dew.

══════════════════════════════════╦══════════════════════════════════

On Barometer Scales the following ║ And the following Summary may

contractions may be useful in ║ be useful generally throughout

in North Latitudes. ║ the world.

─────────────────┬────────────────╫─────────────────┬────────────────

Rise for │ Fall for ║ Rise for │ Fall for

NE by NW-N-E │ SW by SE-S-W ║ Cold, dry or │ Warm, wet or

Dry or less │ Wet or more ║ less wind │ more wind

wind—except │ wind—except ║ —except wet │ —except wet

wet from NE │ wet from NE ║ from cold side. │ from cold side.

─────────────────┴────────────────╨─────────────────┴────────────────

In south latitudes substitute south or southward for north, northward,

etc.

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The Law of Storms The various phenomena by which their approach can be ascertained with certainty, and practical directions to mariners for the avoidance of their fury, compiled from various sources · 第 19 / 27 题