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Updated: June 11, 2025
That the relative humidity of the air is not the all-important factor was often proved by the bad scent experienced just before rain and storms, when the hygrometer showed a saturation of considerably over ninety per cent.
Men usually appeared incredulous when the theory was first broached to them; but when convinced of the fact, as proved indisputably by the hygrometer, they were compelled to acknowledge the truth, and forthwith looked upon it as a matter of course. As the weather grew warmer when the thermometer stood daily at about 86 degrees in a cool room the nocturnal evaporation increased.
Large black and low clouds dissolved in rain, which came down in torrents: these rains lasted two or three hours, and lowered the thermometer five or six degrees. About five o'clock the rain entirely ceased, the sun reappeared a little before it set, and the hygrometer moved towards the point of dryness; but at eight or nine we were again enveloped in a thick stratum of vapour.
My friend, Mr. H., had an hygrometer, which he kept in a small room adjoining that in which he usually sat; and this hygrometer afforded the ground-work for our theories. It proved most satisfactorily that the evaporation exceeded every thing of the kind known in any other part of the globe. It was clear that our atmosphere was drier than that of a brick-kiln when burning its best.
He was endowed with surprising bodily strength, and was skilled in the knightly exercises of riding, fencing, and dancing. He was a lover of social pleasure, and inclined to indulge in expensive habits. While a lad he amused himself by inventing machines for swimming, diving, and flying, as well as a compass, a hygrometer, etc. etc.
The atmosphere of Mexico is so intensely dry, that the hygrometer of Deluc frequently descends to 15°. HUMBOLDT'S Essai Politique, vol. ii. p. 110. When the Artesian well, in process of construction near my residence, had reached a depth of seventy yards, the water that came up was slightly impregnated with this salt. Comércio de Mexico, 1852. The Chinampas or Water Gardens.
One looks forward sadly to the time when nature has been resolutely expelled by a knowledge of dynamics and statics, and when Lucy, with children of her own, will be directing their attention away from childish fancies, to the fact that the poker is a lever, and that curly hair is a good hygrometer.
This consideration explains to a certain point, why, under a perfectly serene sky, the state of the thermometer and the hygrometer being precisely the same in the air nearest the earth, the peak is sometimes visible, and at other times invisible, to navigators at equal distances.
The capsule of the Geranium makes a hygrometer; Barley creeps out of a barn Mr. Edgeworth's creeping hygrometer Flower of Fraxinella flashes on the approach of a candle Essential oils narcotic, poisonous, deleterious to insects Dew-drops from Mancinella blister the skin Uses of poisonous juices in the vegetable economy The fragrance of plants a part of their defence
They assert that he has an apparatus for projection, for which he paid 1,000 pesos, which has never yet been unpacked. When we called on him he showed us, by his hygrometer, that the air was very humid, though the temperature was at 86° Fahr., and told us, what probably is true, that in this heavy, hot weather, every wound and bruise, however trifling, is likely to become serious.
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