240 Meteorological Journal. [Sepr. 1815. _ 
REMARKS, 
Sixth Month.—29. A very fine day: the western sky in the twilight, bright 
orange near the horizon, with a purple glow above. 30, Cloudy morning: after 
which sunshine at intervals. J 
Seventh Month.—1, Heavy Cumulostrati, p.m. 2. Windy, cloudy, a.m,: 
Cirrus, passing to Cirrocumulus, &c.- p. m.+-a luminous twilight, the clouds much 
coloured. 3. a.m. Windy, with Cumulostratus, 4, Cloudy: a few drops, p.m, 
5. Cumulostratus, formed by Cirrocumulus. 6. The wind passed this morning by 
S.E. to S. W. but settled at N. W. with various clouds: rain fell in the night. 
1. Wet this morning early, and windy at N.E.: p.m. fair, with Cumulostratus. 
$. Cumulus, a.m. with Cirrostratus: cloudy evening: some rain by night. 
9. Cumulostratus : orange twilight. 11. A very fine day : pink-coloured Cirri at 
guneset. 12, Sultry; a.m. Cumulostratus by inosculation, About noon, an ap- 
pearance of distant rain in the N. E., which continued till evening: the whole of 
our own clouds gradually disappeared, with a steady 8. W. breeze, At sun-set it 
was clear, and somewhat orange-coloured to N. W., but obscure, with Cirro- 
stratus to N. E, 13. Large ill-defined Cirrd, with nascent Cumuli, and afterwards, 
Cirrocumulus, ‘at a great height, passed to the N, E. with a fresh breeze: a little 
rain fell in the evening. Hygr. about 40° these three mornings past. 14. Various 
clouds, threatening vain at intervals, which followed p.m. in quantity scarcely 
sufficient to lay the dust: windy. 15. a, m. Cumulus, beneath Cirrostratus : 
windy: some light showers, and a trace of the rainbow, at sun-set, 16, A 
slight shower, a. in. 17. Various clouds, a.m.: a few drops, p.m.: at even- 
ing, a tendency to the rapid formation of Cirrostratus, the denser clouds at the 
same time exhibiting a beautiful gradation of colours: twilight orange. 18. Iu 
the morning, an extensive sheet of flimsy Cirrecumulus, which soon moved away. 
Hygr. at 9 a.m. 68°, About 10 p. ms the same kind of cloud: a low murky 
sky. 19, A steady rain, a.m. Hygr. 70° at 9-p.m, 20. Overcast, with Cu- 
mulostratus: windy. 21—26. Mostly cloudy: oecasional showers. 27, 28. Fine. 
RESULTS, 
Prevailing Winds Westerly, and these for the most part N. W. 
Barometer: Greatest height........00--eee+e--» 30°19 inches, 
AGCASE vare's ba werniels Bee ate ¢ selie astm p siimeeeeel 
Mean of the period .............. 29°96] 
Thermometer; Greatest height.......+.+e+-eeeeee5 80° 
PICHAEN ain ale 003 dpideb Saisie tobide Solesaee : 
Mean of the peried................ 61°36 
Eyaporation, (in 23 days, from the 6th inclusive,)........ 2 inches. 
Rain...... SO Ae ve home ee -.-.» 1°38 inch, 
#,* The observations from the 2list inclusive are those of my friend John 
Gibson, at the Laboratory. 
Torrrnuam, Eighth Month, 15, 1815. L. HOWARD, 
