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TABLE VI.-SHOWING THE ELASTIC FORCE OF AQUEOUS VAPOUR,
IN INCHES OF MERCURY, FROM 0° TO 80°, calculated from the Experiments of Regnault.
From Mr Glaisher's Hygrometric Tables.
The intermediate tenths of degrees may be easily interpolated.
TABLE VII.-FACTORS FOR MULTIPLYING THE EXCESS OF THE
DRY-BULB THERMOMETER OVER THAT OF THE WET-BULB, TO
From Mr Glaisher's Hygrometric Tables.
TABLE VIII.- FOR COMPARING THE PRESSURE AND THE VELO
CITY OF THE WIND. Calculated from the Formulæ, V2 x .005 =P; and v 200 P = V.
From Instructions for taking Meteorological Observations, by
Colonel Sir Henry James, R.E., F.R.S., &c.
I N D E X.
The figures, unless where otherwise expressed, refer to the paragraphs of the text,
and not to the pages of the Volume.
ABERCROMBIE, Hon. Ralph, 655.
by ocean-currents, 233. Air-thermometer, invention of, 7. America, influence of its large lakes on
the climate, 209, 267. Anemometers, 440. Aneroid barometer, 43. Anthelia, or glories of light, 625. Aqueous vapour as disturbing influence
on the atmosphere, 116. Arago on lightning, 589; neutral point
of polarisation, 635; on moon's influ
ence on weather, 649. Aristotle On Meteors,' Athenæum, suggestion by a writer in,
25. Atmometer, 310. Atmosphere, drying power of the,
311; height deduced from meteors, 642; from polarisation, 639; mode of
measuring the pressure, 50. Atmospheric pressure, distribution over
the globe, Chap. III. ; its relation to temperature, winds, rain, &c., passim; methods of representing it in storms, 499-501; its irregular distri
bution in storms, 521. Aurora borealis, 605; height, 607, rela
tion to terrestrial magnetism, 606, 609; to storms, 611; distribution over
the earth, 606. BABINET's neutral point of polarisation,
636. Babington, T. H., 665. Bacon, Lord, 483. Baddeley on dust-whirlwinds, 602. Baker, Sir S. W., inundation of the
Nile, 470; dust-whirlwinds of Nubia, Balfour, Professor J. H., 539. Ballingall, R., 655.
Ballot, Dr Buys, 17, 87; LAW OF THE
WINDS, 517; apparent exceptions to,
520, 521, 522; 564, 674, Barker, Sir R., 210. Barometer, invention, 6; description of,
27 ; neutral point of, 34; mode of removing from place to place, and of expelling air from, 37; must be hung perpendicularly, 38; scales, 51; reducing to 32°, 47; correction for height, 52; example showing method of redncing, 61 ; daily variation, 63 ; do. of dry air, 69; annual variation, 75; corrections for range, their use and abuse, 73, 74; variations, where large, 77 ; low in storms not the effect of centrifugal force, 565 ; extraordinary fluctuations in tropical storms, 540; table comparing millimetres with English inches, page 357; and Table III., Paris lines with English
inches, page 358. Barometric gradient, 531, 532. Barometric measurement of heights, 62. Barometric tubes, use of air-trap in, 36. Bates, Rev. J. Chadwick, observations
with rain-gauges, 396. Baxendell, Joseph, 512 ; on moon's in
fluence on atmospheric temperature,
652. Becquerel and Breschet's experiments
of electricity, 583. Bennet's electrometer, 580. Berigny, 615. Beverley, Rev. A., proportion of rain
fall at Aberdeen with different winds,
412. Black-bulb thermometer (naked), 187,
189, 198. Black showers, 479. Blodget's remarks on rainfall of Ame
Brewster, Sir David, on daily march of
temperature, 145; causes which inter-
the atmosphere, 637 et seq.
and spring resort, 157.
273; chart showing, page 121; winter
air for vapour in relation to tempera-
heat of water, 184; intluenced by
extreme, their effect on the death-rate,
resting on hills, cause of, 356; formed
natural snowballs, 425 ; pocky cloud,
thern hemisphere, 456, 637.
280 ; Christmas 1860, 286; July 1867,
497. See Temperature and Frosts,
Convection of heat, 173.
temperature, but on the highest tem-
to high and low temperatures, 166.
251; effect on climate, 361 et seq. :
of rainfall with the height, 398.
on height of aurora, 607.
to magnetism, 611.
posited, and where most copiously,
tained, 324, 330; important to horti-
culturists, as predicting frosts, 334.
mic isabnormals, 275; annual march
pressure of, 69; importance of know-
ledge of distribution of, 682 et seq.
element of climate, 311.
caution in using, 326.
of unhealthiness, 345; as a prognostic,
a branch of, 26.
the absolute humidity, 336.
sources of, 585; in relation to its va-
on drainage and temperature of soil,