Meieoi'ological Observatiojis Jbr November 1831. 79 



Smnmary of the Weather. 

 A clear sky, 2h; fine, with various modifications of clouds, ISi-; an over- 

 cast sky without rain, 10|; rain. Ah. — Total 30 days. 



Clouds. 



Cirrus. Cirrocumulus. Cirrostrivtus. Stratus. Cumulus. Cumulostr. Nimbus. 



16 2 30 12 12 19 



Scale of the prevailing Winds, 



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



1 2i 1 i 7 9 9 30 



General Obsei-vatioiu. — This month has been alternately wet and dry, 

 and frosty, and windy at intervals. In the afternoon of the 2nd, showers 

 of hail fell, which were succeeded by lightning from half-past 9 till 1 A.M. 

 In the morning of the 10th, hoar-frost appeared on the tops of the houses, 

 and ice on the leads, the first time this autumn. In the afternoon of the 

 15th a strong gale from the N.W. brought on a heavy shower of hail ; 

 some of the hailstones were as large as common sized marbles, and had 

 icy nuclei. In the evening of the 18th, a large lunar halo appeared, while 

 a small yellow corona and a burr surrounded the moon ; they were fol- 

 lowed by rain in the night. There was but a little difference in the tem- 

 perature of the external air between the 20th and 25th, yet scarcely any 

 rain fell in the interim. 



The mean temperature of the external air this month is one degree 

 under the mean of November for many years past. 



The atmospheric and meteoric phaenoniena that have come within our 

 observations this month, are, two lunar halos, one rainbow, and eight 

 gales of wind, naniel}', one from the North-west, five from the South-west, 

 and two from the West. 



KEMARKS. 



io/!£/oH.— November 1. Overcast: windy, with rain. 2- Fine- 3. Rain : 

 clear. 4. Slight frost : fine. 5. Cloudy: clear at night. 6. Rain. 7. Windy, 

 with rain. S. Fine. 9. Frosty: foggy at night. 10. Foggy: rain. 

 11, 12. Cloudy. 1:?. Showers in the morning: clear and frosty. 14. Frosty: 

 stormy and wet at night. 15. Showers: clear and frosty. 16. Cold and 

 windy: sleet : ground covered with snow at night. 17. Dense fog. 18. Fine 

 in the morning: rain. 19. Clear. 20. Fine : rain. 21. Rain: cloudy. 

 22. Rain. 23. Hazy. 24. Fine. 25. Fine: slight rain. 26, 27. Hazy. 



28. Frosty: overcast. 29. Foggy: barometer very high. 30. Rain. 



Penzance. — November 1. Rain. 2, 3. Showers. 4. Fair. 5. Rain. 

 C. Heavy rain. 7. Fair: showers. 8. Showers. 9 — 12. Fair. 13, 14. Showers. 

 15 — 18. Showers: hail and rain. 1 9, 20. Showers. 21 — 23. Rain. 24. Fair. 

 25, 26. Rain. 27. Fair. 28. Clear. 29, 30. Fair. 



Boston. — November 1. Cloudy: rain at night. 2 — 4. Fine. 5. Rain. 

 6. Cloudy: rain r.M. and stormy. 7. Fine. 8. Cloudy. 9. Fine. 10. Fine: 

 rain at night. 11. Cloudy. 12, 13. Fine. 14. Cloudy: rain and stormy, 

 with lightning P.M. 15. Fine. 16. Snow. 17. Fine. 18. Fine: rain p.m. 

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

 A.M. 23. Fine: temperature only half a degree lower than 18th last 

 August. 24. Fine. 25, 26. Cloudy: rain early a.m. 27. Fine. 28. Cloudy. 



29. Fine. 30. Cloudy. 



Meteoro- 



