THE BAROMETER RISES | THE BAROMETER FALLS for Northerly wind | for Southerly wind (including from North-west, by | (including from South-east, by the the _North_, to the Eastward), | _South_, to the Westward), for dry, or less wet weather,--for | for wet weather,--for stronger less wind,--or for more than one | wind,--or for more than one of of these changes:-- | these changes:-- | EXCEPT on a few occasions when | EXCEPT on a few occasions when rain, hail, or snow comes from the | _moderate_ wind with rain (or Northward with _strong_ wind. | snow) comes from the Northward. -------------------------- For change of wind toward | For change of wind toward Northerly directions,-- | Southerly directions,-- | A THERMOMETER FALLS. | A THERMOMETER RISES. | Moisture or dampness in the air (shown by a Hygrometer) increases BEFORE rain, fog, or dew. -------------------------- On barometer scales the following | Add one-tenth of an inch to the contractions may be useful:-- | observed height for each hundred | feet the Barometer is above the RISE | FALL | half-tide level. | | FOR | FOR | The _average_ height of the | | Barometer, in England, at the NORTH | SOUTH | sea-level, is about 29·94 inches; | | and the _average_ temperature N.W.--N.--E. | S.E.--S.--W. | of air is nearly 50 degrees (London | | latitude). DRY | WET | | | The Thermometer falls about OR | OR | one degree for each three hundred | | feet of elevation from the ground, LESS | MORE | but varies with wind. | | ------ WIND. | WIND. | “When the wind shifts against | | the sun, ------ | ------ | Trust it not, for back it will | | run.” | | ------ EXCEPT | EXCEPT | _First_ rise after very low | | Indicates a stronger blow. WET FROM | WET FROM | ------ | | Long foretold--long last, NORTH. | NORTH. | Short notice--soon past. (_In South Latitude read South for North._) IV.—CONDENSATION.