The Sun.
London, England, 1862-01-20 00:00:00

STRONG WIND z' AND GALES.

At a meeting of the Meteorogical Society, held on Jan,
15, Mr. Beardmore, C.E., president, in the chair, a paper
was read by James Glaisher, F.R.S., " On the Pressure of
' the Wind in Strong Winds and Gales at the Royal Obser-
vatory, Greenwich, in the years 1841 to 1860." The author
excluded from his investigation all light winds, or when-
ever the pressure en the square foot was less than 51b. He
detailed in each year every successive stormy hind or gale,
beginning with the year 1841, and ending with the year
1860, indicating the limits of pressure of each, with the
direction of the wind. He then collected all the cases which
had happened in these 20 years under each direction of the
wind, and found that there had been five cases from the S.,
with pressures from 71b to 161 b ; 12 from the S.S W.,
from 71b to 241 b; 85 from the S.W., from 71b to 251 b; t 1
from the W.S.W., from 71b to 251 b , 18 from the W.,
from 71b to 281 b ; six from the W.N.W., from 71b to 251 b;
three from the N.W , from 71b to 121 b; one from the
N.N.W„ with a pressure of 61b ; eight from the N., from
71b to 151 b; 'inc, from the N.E., from 71b to 21lb; three
from the E.N.E , from 71b to 141 b; two from the E., from
71b to 91b ; one from the S.E., with a pressure of 61b ; and
one from the S.S.E., with a pressure of 71b; and within
the 20 years the wind had once blown with a pressure of
281 b-viz., in 1860, from the W. ; twice with pres-
sures of 251 b, from the W.S.W. and S.W.; once
with 241 b from S.S.W. ; once with 211 b from N.E.,
and the greatest pressure from all other quar'ers u,AB
161 b. From the N.N.E and E.S.E. there had b. en no
instance of a pressure so great as slb on the square foot.
Mr. Glaisher then exhibited tables, showing the order of
frequency and magnitude of the pressure of the wind in
every month of the year. He remarked that it January
pressures exceeding 51b had always taken place; that in
19 years they varied from 61b to 181 b, and on. e reached
251 b. In February four instances occurred of no pressure
so great as 51b, 14 from 71b to 221 b, and one of 251 b. In
March, four instances of no pressure so great as 51b, 15
from 61b to 171 b, and one of 211 b. In April, three in-
stances of no pressure so great as 51b, 14 from 61b to
131 b, and three of 151 b. In May, six instances of no
pressure so great as 51b, 13 from 61b to 161 b, and one of
231 b. In June there were 11 instances of no pressure so
great as 51b, eight from 71b to 121 b, one of 231 b. In July,
nine instances of no pressure so great as 51b, 10 from 61b
to 101 b, and one of 151 b. In August 11 instances of no
pressure so great as 61b, 8 from 71b to 111 b ; and one of
161 b. In September, 10 instances of no pressure so great as
slb ; 9 from 61b to 121 b ; and one of 131 b. In October five
instances of no pressure so greet as 51b; 14 from 71b to
151 b, and one of 161 b. In November, six instances of no
pressure so great as 51b ; 13 from 61b to 201 b ' • and one of
241 b. In December, seven instances of na pressure so
great as 51b, 12 from 71b to 161 b, and one of 241 b. The
author then exhibited a table of the extreme pressure of
the wind in every month, and remarked that in some
years,
.as in 1841, 1842, 1843, 1846, 1849, 1855, 1856,
and 1857, no pressure had reached 51b for several months
together; while in other years, as in 1848 and 1853, the

pressure had been. e:Lceeded in every mouth bn. t one in both
years, and. in 1850 in every month without eau), ption. The
year 1860, the la st of the ser'es, was distinguished by the
greatest pressur a in the 20 years—viz., 281 b in the month
of February; at td this year was no less remarkablt ) for pres-
oulres of 221 b in ithe months of May and June, wiTile in these
m onths, genera lly the extreme pressure was very ms'ililes3.
M. r. Glaisber tb en spoke upon the greatest pressures in each
yea r, and poinaed out the great difference between thein in
different years.. He said in 185.1. the greatest pressure in
the ykla.r was 111 h only ; in 1846, i2lb ; in 1845, 1818, and
1857, hit each year, it was 131 b ; while in 185.) it was 201 b ;
, 841. 211 b ;in 1849, 221 b ;in 181.1 and 1852, 241 b ;in
1843-
au. 1850, 2.51 b ; and in 1860, 26.1 b. It was also re-
* the light pressures, with the exception of 1851,
marktil thk, 4, as in the five years 1844 to 1848, the ex-
were in OM,. were 13Ib to 18Ib, while in the first three
Creme press-arta
1841 to 1843, they were from 211 b to
years of the serer., ,
9 to. 1852,. with the exception of 1851,
, and in the last two years of the
2thselby;wier.reth2e23;beartoT2%b
Ftsries they were 201 b I'o u