80 Meteorological Journa’. (Jury, 1815, 
REMARKS. 
Fifth Month.—1. Dew this morning: a very fine day: lightning at night far in 
the S. 2. Dew, with rudiments of thunder clouds, which in increasing became 
very beautiful: a storm was within hearing the whole mid-day, to S. and S. W.: 
p.m. a heavy shower mixed with large hail, followed by lightning in the S. E. 
3. Astrong breeze: thunder clouds, which dispersed in the evening. 4, Cumulo- 
stratus: some showers, followed by Cirrostratus. 5. Much dew: clear morning, 
succeeded by Cumulus, &c,: thunder to the 8.: a shower in the evening. 6. Dew 
inlarge drops: somewhat misty and overcast: a shower in the night. 7. Windy: 
dripping at eve. 9. Cumulostratus: a few drops by inosculation at sun-set: rain 
in the night. 10. Windy: driving clouds. 11. Dew: windy, a.m, at S. E, with 
large Cirri, and below them Cirrocumulus, variable and beautiful: p.m, the 
Cumulus was added, with Cirrostratus in the region of its base: at sun-set a 
storm in §. W., which about nine passed us to N, E: the lightning in violet co- 
loured sheets, with delicate white branched streaks on them: the thunder mode- 
rate, rolling out to a greatlength. 12, Much wind: slight showers, a.m.: clouds 
and haze at sun-set, 13. Wind and rain: at half-past six p.m., during a heavy 
shower which passed to the E., there was a perfect double rainbow, on which IE 
repeated an observation already recorded in this register, under Fifth Month, 4, 
1813, The contrast of the space, included between the two bows, with the tint 
of the remainder of the cloud, was on the present occasion very striking. 
14, Fair and warm: a shower, p.m. with a bow: Cirrostratus. 15. Hollow 
wind at S. with an overcast sky: wet evening. 16. Cumulostratus: wind, p.m, 
N.W. a milky luminous twilight: much dew. 17. Somewhat misty morning: 
p.m. Cirrostrati advancing from the N. overspread the sky, without any other 
cloud. 18. a.m, Windy at N., and overcast with Cumulostratus: clear and 
calm, p.m.: red sun-set. 19, A very fine day: the twilight luminous, and some- 
what ruby-coloured, followed by Cirrostratus. 20, Windy: various clouds: the 
sky purplish round the moon at night. 21. a.m. Brisk N. W. wind: showers, 
23, Showers. 28. A brisk wind at S. E.: Cirrus, followed by Cirrostratus : Nimbé 
inthe S, at sun-set: rain by ten at night. 29, Some thunder; rainy afternoon, 
RESULTS. 
Winds Westerly, with a small portion of Easterly at the beginning and end of the 
period. 
Barometer: Greatest height......... “fice? «ee. 30°23 inches. 
1 Veet) A BE ABABA SS Scot Seine ay lamcig he aaedh 
Mean of the period .............. 29°812 
Thermometer: Greatest height. ........0.--++--++- 80° 
MGASb \teoid eit 0s bes aie alas wistapieeps 6 34 
Mean of the period........... oor 2 08758 
Evaporation, 2°08 inches. Rain, 1°10 inch, 
From the 6th to the 22d inclusive, I made observations on the temperature with 
an additional Six’s thermometer, placed in a position nearly horizontal exposed to 
the sun on a grass plat, 20 yards distant from the standard one (which is near the 
house), and about ten feet lower than the latter. This second thermometer indi- 
cated, with two exceptious, a higher temperature for the day ; the difference in 
one case being 10°, and the mean difference 4°: it indicated, uniformly, a lower 
temperature for the night, the greatest difference being 6°, the mean difference 
4°9°: but the total mean of the observations differed, as 1 anticipated, very little, 
the upper thermometer giving 57°5°, the lower 57°19. 
Tortenuam, Sixth Month, 7, 1815, L. HOWARD. 
