Meteorological Observations for February 1831. 319 

 Summary of the Weather. 



A clear sky, 3% ; fine, with various modifications of clouds, 1 1 ; an overcast 

 sky without rain, 7i ; foggy, ; rain, hail and snow, 5f . Total 28 days. 



Clouds. 

 Cirrus. Cirrocumulus. Cirrostratus. Stratus. Cumulus. Cumulostr. Nimbus. 



12 6 26 1 14 12 20 



Scale of the prevailing Winds. 



N. N.E. E. S.E. S. S.W. W. N.W. Days, 

 li 1 3 3 7 48 28 



General Observations. This month was generally shower}', with occa- 

 sional gales of wind, and mild for the season, except the first five days. 



On the 1st instant, there were frequent falls of granulous snow mixed 

 with hail in the day,and three inches in depth fell in the night. The following 

 was also a snowy day, and the flakes were very large, loose, and moist, 

 amounting to three inches in depth. Beyond York the snow about the 

 same time is said to have drifted in the roads above twenty feet in depth. 

 The maximum temperature of the external air for the twenty-four hours 

 occurred in the night of the 3rd, and nearly all the snow disappeared here 

 by the following morning. On the 9th, after a few showery and windy 

 days, the thermometer in the shade rose to the unusual height of sixty de- 

 grees, when the heat seemed to descend to the earth from passing beds of 

 beautiful cirrocumtilus clouds; and in the course of the afternoon rudi- 

 ments of thunder clouds passed over. In the afternoon of the 26th a fine 

 rainbow appeared several minutes in a passing nimbus, with two small con- 

 centric ones of the same colours, but fainter, and a complementary bow 

 above them. In the evening a bright yellow corona round the moon was 

 circumscribed by small well defined rings of green and red. 



The atmospheric and meteoric phenomena that have come within our 

 observations this month, are two solar and three lunar halos, one rainbow 

 and seven gales of wind, or days on which they have prevailed, namely, 

 one from the North-east, two from the South-west, two from the West, 

 and two from the North-west. 



REMARKS. 



London. February 1. Heavy fall of snow in the morning: clear and fine 

 at night. 2. Fine in the morning : sleet. 3. Frosty : fog : heavy rain at 

 night. 4. Rain. 5. Cloudy and cold. 6. Fine in the morning : sleet. 

 7. Fine. 8. Rain. 9 12. Fine. 13. Rain. 14. Overcast. 15. Foggy 

 in the morning: very fine. 16. Fine. 17. Showery: fine. 18. Fine. 



19. Cloudy: rain at night. 20, 21. Fine, but cold. 22. Drizzly. 23. Fine. 

 24. Showery. 25. Cloudy: fine. 26. Stormy and wet: fine at night. 

 27. Rain. 28. Fine. 



Penzance. February 1. Fair: hail and snow showers. 2. Hail and snow 

 showers, s. Rain. 4. Showers: fair. 5. Clear. 6. Fair: rain. 7. Fair: 

 misty. 8. Rain. 9. Misty: fair. 10. Fair. 1 1, 12. Misty: rain. 13. Fair: 

 rain. 14. Misty. 15, 16. Fair : rain. 17. Fair. 18. Clear. 19. Fair. 



20. Rain: fair. 21. Fair: misty. 22. Rain: fair. 23, 24. Fair. 25. Fair: 

 rain. 26. Rain. 27. Rain : fair. 28. Fair. 



Boston. February 1. Stormy, with prodigious fall of snow. 2. Fine: 

 snow at night. 3. Fine. 4. Rain : snow P.M. and a stormy night. 5. Snow, 

 and stormy. 6. Fine : snow P.M. 7. Fine. 810. Cloudy. 11,12. Fine. 

 1315. Cloudy. 1 6. Fine : rain early A.M. 1 7. Cloudy : rain early A.M. 

 18, 19.Fine. 20. Cloudy: rain early A.M. 21. Fine. 22.Rain. 23.Fine. 

 24. Cloudy. 25, 26. Cloudy : rain early A.M. 27. Rain. 28. Fine. 



Meteoro- 



