Слике страница
PDF
ePub

Mitchill. changed from clear to cloudy, and that snow

began to fall; and at twelve, Mrs. Mitchill, who opened a window and looked out, observed that the ground was already white with snow, the tempelt was brewing, and,

properly speaking, was formed at two. bumphrey. 6. That night Mr. Humphrey Wood was

on board a floop bound fiom Newport ( R. I. ) to Newyork. The tempest drove the vessel ashore, before morning, on Mount-Misery Neck, upon Long-Isand. They failed from Fisher's Island, where they had been waiting for a wind, at 10 o'clock at night, with a

wind at E. S. E. and warm and pleasant bauled.

weather. But by midnight it hauled E. N. E. and blew a gale with snow. Fisher's Island may be computed to be about 140 miles E. N. E. of New-York.

7. Mr. Webster observed some of the phe. phenomena ? nomena of this change of weather, in its beginning, at New-Haven.

This place is 89 miles from New York, or 331 from Wathe ington. Here the weather was clear in the early part of the evening, but was overcast by nine. The stormy commotion of the atmolphere seems to have begun about twelve.-At

Boston it was rather more than an hour later. Mufsachusetts. 8.Mr.Blair,an officer who was on board one

of three ships from Salem, in Maffachusetts, that were lost on Cape Cod during the storm, related, after his escape, that the weather, on

the day of their sailing, Sunday, Feb. 27, was breeze. remarkably fine and favourable. At sunset

they were about four leagues from Cape Ann light house, with a light breeze from S. E.

9. After midnight the weather grew very weered? threatening; ard at half past two in the morn

ing of the 22d, the wind veered to the N. E.

and it snowed fo fast that the ships could discern. hardly discern each other. The shipwrecks

or 257

during this storm were numerous and dread. Frozen.
ful. Many persons were frozen to death.
Salem is distant from Washington 499 miles,

from new-York; so that this latter
place isabout midway between the two places.

10. At Portland, in Maine, distant 603 maine. miles from washington, the snow began be. tween day-light and sun-rise. It was observed by young Mr. Vaughan, who was travelling travelling, on the morning of the 22d. At 8 A. M. the wind blew violently.

11. The storm began still later at Hallo. Kennebeck, well on the Kennebeck River. This place is 683 miles from Walhington. There the

sun Tole clear on the morning of the 22d. The air became cloudy in about a quarter of an hour. The snow began about eleven, and the storm had become furious within two hours

Profeffor Waterhouse and Benjamin meteorologicVaughan, Esq. have particularly attended to al ? these curious meteorological facts.

12. At Poughkeepsie, 82 miles N. of NewYork, and fituated beyond the first range of Poughkeepsie. mountains, the storm began about 4 o'clock on the morning of the 22d. And at Albany, 165 miles north of New York, it did not be. gin until a little before day break on the morning of the 22d.

13. At Providence (R. I.) Dr. Wheaton
observed the evening of the 21st. to be clear evening,
and pleasant. The

watchmen informed him
"the weather changed before 12 o'olock, and
continued cloudy, with variable winds, until
the violence of the storm began, which was
at half past three on the morning of the 22d.”
- Providence is 438 miles from Washington,

14. Accounts from Charleston (S. C.) state Charletin,
that it Began there on the 21st. between two
and three o'clock in the afternoon.--The ais-
tance of Charleftqn from Washington is 550

[ocr errors]

Ilands. milcs,- By the newspapers it appears to have

been felt in the Bahama Islands.

15. It will be found on caleulation, that

between Charleston and Cape-Ann, along the proceeded coast, this stormy movement proceeded to

windward at the rate of nearly one hundred miles an hour; for, as it began at Charleston, say at three o'clock, at new-York at eleven, & offCape-Ann at two the next morning, there is a difference of eight hours between Charleston and New York, and of three hours be. tween the latter city and Salem, making in the whole eleven hours.

16.Now, computing the distance from Carlela

ton to N. York at about 800 miles, & from N. difference. York to Cape inn more than 250, there will

be a fea cost of almost 1100 miles fpept over by this form in somewhat more than eleven hours. But this computation applies only to the fea-coast: for if we take any given point, as the city of New York for example, and in-

stead of N. E. reckon due N. it will be found progress? that the progress is considerably flower: for

it took all the time between eleven at night and day-break next morning to reach Albany, only 165 miles distant in that direction.

17. Now, these remarks explain some mete

orological facts, which though of common paradoxical? obfervation, have hitherto seemed apradoxical

q unaccountable: for mariners know, that to form a good judgment of wind and weather, they must keep a look-out for clouds and chan

ges of atmosphere to leeward. In New York, accompanies. the rain or snow which accompanies a N. E.

storm can be seen by labourers along the docks

and wharves, in the S. W. at Staten-Island, wharves. ten or eleven miles distant, for some time. bea

fore it begins in the city, so as frequently to break off work, and put away their tools.

18.And it is confirmed by long obfervation

among the farmers in that vicinity, that snow. Vicinity ? banks, as they term them, are to be ieen in the S. W. many hours before the atmosphere where the observers are, is clouded in the smallest degree, or any current of air percepti- perceptible ble. They remark, further, that a judgment can be formed of the weather by noting whether the gathered clouds lowering in the diftant horizon are visible to the northward or southward of the setting fun. If at sunset they are to the $. of the luni, they predict a north-east storm, with show; if to the N. à fleet. fouth-east norm, with fleet or rain.

Observations and reflections on fiorms, and some otha

er Phenomena of the atmosphere. In a Letter from Profesor Waterhouse, to Dr. Mitchill, data ed Cambridge, (Massachusetts) March 20, 1802.

« Dear Sir,

Our letter of the 8th instant, request. Precise.

1.

"Ying information of the precife time

the late wide-Spreading storm commenced at this place, came to my hands evening before lait. I haiten to gratify you as far as I am able.

2.“ Sunday, the 21t. of February, the day chimnies, preceding the storm here, was remarkably calm and pleasant. The smoke ascended from thermometer? the chimnies in a straight column. The thermometer at noon was 47. Neither hygrome- hygrometer ? ter nor barometer indicated, at that period, any disposition of change in the atmosphere. barometer

3. As late as half palt ten at night, the sky was clear & star-light. At about two hours and a half after this, viz. one o'clock in the morning of the 22d the snow-storm began. My information comes from an intelligent intelligent? market-man who set out from his own house for Cambridge at midnight. Excepting for a

few

Wednesday. few hours on wednesday, 24th, we saw not the

fun for nine days. It was the longest if not fevereit fnow-storm lever knew.

“I can readily conceive several good

purposes may be answered by this inquiry. I Halifax? bave therefore written to Kennebec and to Hali

fax, and requested my correspondent at the last place to extend hisenquires to Newfound

land. I hope you will extend yours to PenjaJamaica. cola and even to Jamaica. The severity of

the storm was from north-north-ealt; that is, north, two points to the east, being, you know, what the ancients termed aquilo.

s. Theie ebservations will probably

furengthen the opinion prevalent in this quarkemisphere? ter, that all our severe north ent storms begin

first, in point of time, in the south-weft. FrankJin was first led to notice this, on being prevented by a stormy sky from observing an

eclipse of the meon at Philadelphia, when at plear. Boston, 400 miles north-east of that city, the

hemisphere was fufficiently clear for that purpose.

6." It has always impresfed me with some.

thing bordering on wonder, that, during the fenturies ? hoac-andtwenty centuries wherein the memory

and learning of mankind have been exercised, there has not been found one secretary of nature

fufficiently instructed to give us a complete afcent. history of the ascent of vapcurs from the ocean,

their suspension in the air, tbe formation of clouds, defcent. of fnow, and of the 'defcent of rain, with an entire

and connefied chain of causes.

7. Des Cartes, Nieuwentyt, Dr. Halley,

Hunter, and some few others, have 'amused fraginents. the world with their theories on this subject;

but which of them is unincumbered with dif.

ficulties? What facts we have in this füb. pbeno mena? lime part of nature are mere fragments wide

ly scattered. The phenomena in these lofty

« ПретходнаНастави »