7G Meteorological Journai. [Fes. 1817¢ 
REMARKS. 
Twelfth Month—12. A wet day after a frosty night: the fore part of this night 
a violent storm of wind from the westward, the barometer rising fast. 13. a.m. Calm, 
with a turbid sky: about noona clap of thunder, followed by some heavy sweeping 
hail. 14. The day fine, with Cirrus: after dark, the sky being suddenly overcast, 
the wind rose to an excessive degree of violence, with rain: the barometer had 
fallen since noon rapidly, the minimum (which-is also the lowest point for the 
year) occurred yery early in the morning of 15. During the storm in the night I 
was twice sensible of a tremor of the earth, distinct from the effects of the wind, 
and lasting perhaps a quarter of a minute. This I found reason to attribute.to 
the shock of electrical discharges, as I found it had thundered twice about the 
time. 15. a.m. A gale, with clouds: the day fine, and windy afterwards. 
16. Hoar frost: fair, with Cirrostratus: at night a small meteor moving eastward. 
17. a.m. Wet: the wind §.E, 18. The wind passed by W. to N., and gradually 
rose to a moderate gale: a few drops about noon. 19. Wind inclining to N, ©. 
a stiff breeze: snow, p.m. part of which lay on the ground. 20. A brilliant 
evening twilight, which was reflected by haze in theeastern sky. 22. Clear, save 
a little Cirrostratus: wind gentle and variable. 23. a,m. Wind rising, the air 
turbid: sleet and rain followed, with a windy night. 25. Very fine day, the 
barometer nearly quiescent at 29°72 till evening: at night the wind rose, and was 
boisterous to 26, on which day much rain, in squalls, p.m.: a lunar corona at 
night: 27. Nimbi: the sun set fiery red, and much enlarged: windy. 28, Hoar 
frost: fair day: night very tempestuous, with rain from the southward, which 
began, with the rise of the barometer, at 10 p.m. 29. Wind, followed by Cirro- 
cumulus, and a calm night. 30. A very wet day and night. Sl. Misty: little 
wind. 
1817. First Month.—1. Windy: wet, p.m. 2. Fair: at five, p.m. hygr. 65°, 
and the moon yellow : notwithstanding these indications, there fell much rain and 
snow after itin the night. 3. Fair day, save a slight shower: the night (after 
‘bright moonlight) very stormy, with rain. 4, Small driving rain: at night an- 
other gale of wind. 5,6, 7. Much the same alternations as for several preceding 
days. 8. Very white rime: misty about noon: Cirrostratus. 9. The wind has 
now gained the E., having gradually shifted round by N.: hoar frost: misty air. 
RESULTS, 
Barometer: Greatest height.......... sseveseeue S0'OS inches 5 
Least ..... Sie aise i isie oie inre te Siac huxe ee 'eaial Coo. Ae geaS 
Meanvob the period. .).josis!.i0«.<(0sl 29°649 inches. 
Thermometer: Greatest height...... ohne tcbaters toes 
PEASE te receind slalpciatna>,> ter a 3e558- Saeeeae 
Mean of the period ...,.......... 36°10 
Mean of the hygrometér ......6....cnceeeseceees 83° 
RAI se cies Seala'esiWieie Seeatefiate Romie BEB FoNES 5°61 inches. 
The wind, though chiefly westerly, has been very variable in direction, and 
equally so in force; presenting a succession of heavy gales, with intervals of frost 
and rain, This enormous quantity of rain being twice as much as usttally constitutes 
a wet moon in this part of the island, had the usual effect of inundating the country 
to a great extent, especially when met by the spring tide after the full. By a 
mark preserved at the Laboratory, however, I find that in the inundation of 1809 
the river Lea rose 15 inches higher than on the present occasion. 
Totrrsnnam, First Month, 18, 1817. L. HOWARD. 
