Meteorological Observations for November 1827. 79 



coloured light, and the segment which it described above the horizon, in- 

 dicated the phenomenon, whose altitude did not exceed five degrees ; nor 

 was it accompanied by any perceptible coruscations during the hour of 

 observation. 



In the mornings of the 22nd and 23rd the ice lay pretty thick on the 

 ground, and icy efflorescences appeared on the inside of the glass windows 

 (being the first time this autumn), which were succeeded by a frosty haze on 

 the latter day, and a light shower of snow in the evening. This was the 

 earliest fall of snow observed here during the last twelve years. Several 

 showers of snow also fell in Northumberland on the 21st, and much more 

 fell between London and Manchester on the 22nd and 23rd. 



The mean temperature of the atmosphere for November varies con- 

 siderably in different years, sometimes to ten or twelve degrees. Sudden 

 changes from a temperate air to several degrees below the freezing point, 

 as was the case the latter part of this month, are found so powerful on 

 some delicate constitutions, as to cause a general languor and a painful 

 sensation of the flesh, which are mostly experienced at the setting in of 

 piercing northerly and easterly winds immediately after mild currents of 

 air from the opposite points of the compass. By some attention to this sub- 

 ject, it may be ascertained that colds and their calamitous train of con- 

 sequences at the close of autumn and beginning of winter are more fre- 

 quently produced by sitting in wet clothes and shoes, or in a brisk current 

 of air when warm ; or 'by going out of a hot room for any length of time 

 in the dewy or foggy night air, — circumstances which seldom fail in obstruct- 

 ing the insensible perspiration of the body, than by a uniform decrease of 

 temperature, however low, with the precaution of wearing suitable winter 

 clothing. 



The atmospheric and meteoric phenomena that have come within our 

 observations this month, are two paraselence, three lunar halos, an aurora 

 borealis, two meteors, lightning in the evening of the 8th, and three gales 

 of wind, two from the South, and one from the West. 



REMARKS. 



London.— Nov. 1. Fine day : some rain in the evening. 2, 3. Fine. 

 4. Foggy morning : fine day. 5. Cloudy. 6. Fine. 7, 8. Cloudy. 9. Drizzly. 



10. Cloudy. 11, 12. Fine. 13 — 15. Cloudy. 16. Rainy. * 17. Cloudy. 

 18. Foggy morning. 19. Cloudy. 20. Gloomy: cloudy. 21. An extraor- 

 dinarily high tide this morning about 4 o'clock, doing very considerable 

 damage: day fine. 22. Fine : a fall of snow about 4 p.m. covering the ground 

 generally. 23. Cloudy : clear night. 24. A considerable fall of snow during 

 the night. 25. Gloomy : calm : a gradual thaw. 26. Gloomy. 27. Fine. 

 28. White frost : fine, having rain in the night. 29. Fine. 30. Cloudy. 



Penzance.— Nov. 1, 2. Fair. 3 — 5. Fair : showers. 6 — 9. Misty. 10. Fair. 



11. Fair: rain. 12. Fair. 13, 14. Misty. 15— 17. Rain. 18. Fair. 

 19,20. Clear. 21. Fair: hail-showers. 22. Hail-showers. 23. Rain. 

 24. Showers. 25. Misty. 26. Fair. 27, 28. Rain. 29. Fair. 30. Misty. 

 — Rain-gauge ground level. 



Boston. — Nov. 1. Fine. 2. Stormy. 3, 4. Cloudy. 5. Fine. 6. Rain. 

 7. Cloudy : rain, a.m. 8, 9. Cloudy. 10 — 12. Fine. 13, 14. Cloudy. 

 15. Foggy. 16, 17. Cloudy. 18. Cloudy: rain a.m. 19, 20. Cloudy. 

 21, 22. Fine : plenty of ice for the first time this season. 23, 24. Fine : snow, 

 p.m. 25, 26. Cloudy. 27. Foggy. 28. Fine. 29. Rain. 30. Cloudy. 



RESULTS. 



Winds, N.2:NE. l:E.l: SE. 3: SW. 2 : W.3: NW. 13: var.l. 



London. — Barometer : Mean height for the month 30-154inch. 



Thermometer : Mean height for the month 43° 



Evaporation '83 inch. 



Rain 1-32. 



Meteor o- 



