Meteorology; or, Weather ExplainedM'Pherson, J. G. (John Gordon)
Science
Meteorology; or, Weather Explained
M'Pherson, J. G. (John Gordon)
Meteorology
Most men who are bent on business or pleasure, and all dwellers in the
country who have the instruments, make a first call at the barometer in
the lobby, or the aneroid in the breakfast-parlour, to "see what she
says." A good rise of the black needle (that is, to the right) above the
yellow needle is a source of rejoicing, as it will likely be clear, dry,
and hard weather. A slight fall (that is, to the left) causes anxiety as
to coming rain, and a big depression forebodes much rain or a violent
storm of wind. In either case of "fall," the shutters come over the eyes
of the observer. Next, even before breakfast, a move is made to the
self-registering thermometer (set the night before) on a stone, a couple
of feet above the grass. A good reading, above the freezing-point in
winter and much above it in summer, indicates the absence of killing
rimes, that are generally followed by rain. A very low register accounts
for the feeling of cold during the night, though the fires were not out;
and predicts precarious weather. Ordinarily careful observers--as I, who
have been in one place for more than thirty years--can, with the morning
indications of these two instruments, come pretty sure of their
prognostics of the day's weather. Of course, the morning newspaper is
carefully scanned as to the weather-forecasts from the London
Meteorological Office--direction of wind; warm, mild, or cold; rain or
fair, and so on--and in general these indications are wonderfully accurate
for twenty-four hours; though the "three days'" prognostics seem to
stretch a point. We are hardly up to that yet.
The lower animals are very sensitive as to the state of approaching
extremes of weather. "Thae sea beass," referring to sea-gulls over the
inland leas during ploughing, are ordinary indicators of stormy weather.
Wind is sure to follow violent wheelings of crows. "Beware of rain" when
the sheep are restive, rubbing themselves on tree stumps. But all are
familiar with Jenner's prognostics of rain.
Science has come to the aid of ordinary weather-lore during the last
twenty years, by leaps and bounds. Time-honoured notions and revered
fictions, around which the hallowed associations of our early training
fondly and firmly cling, must now yield to the exact handling of modern
science; and with reluctance we have to part with them. Yet there is in
all a fascination to account for certain ordinary phenomena. "The man in
the street," as well as the strong reading man, wishes to know the "why"
and the "how" of weather-forecasting. They are anxious to have
weather-phenomena explained in a plain, interesting, but accurate way.
The freshness of the marvellous results has an irresistible charm for the
open mind, keen for useful information. The discoveries often seem so
simple that one wonders why they were not made before.
Public-domain text, read in full here on John Shaqi.
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