Meteorological Observations foi- December, 1826. 159 



General Obse7-vations. — The first part of this month was very wet, and 

 the latter part dry (excepting a day or two), with more healthy airs. It 

 has been remarkably mild for the season, the greatest difference in the 

 state of the thermometer between the days and nights being only 15 de- 

 grees, and in three of the nights it rose higher than in the days. 



The mean temperature of the external air this month, is upwards of four 

 degrees higher than the mean of December for the last ten years ; nor 

 have we had so mild a December since that in 1821 : indeed, it is one and 

 a half degree higher than that of last month (November), which in this 

 place is unprecedented. The Barometer too, has been tolerably steady ; 

 and it appears from the scale of the winds that they were nearly equal in 

 duration from the eight points of the compass. 



There having been but a few frosty mornings this month, the tempera- 

 ture of spring water is therefore nearly three-quarters of a degree higher 

 than at this time last year. 



In the nights of the 10th and 11th, several small rings of colours, and 

 a close corona within a yellow discus halo, appeared round the moon, 

 which were succeeded by rain. 



Although a water-spout is said to have burst over Bungay, in Suffolk, on 

 the 3rd instant, yet that day was fine here. 



The atmospheric and meteoric phenomena that have come within our 

 observations this month, are one lunar halo, two meteors, and two gales 

 of wind, namely, one from the East, the other from South-west. 



London. — Twelfth month. 1. Cloudy: rain at night. 2. Fine. 3. Cloudy 

 and fine. 4. Cloudy. 5. Cloudy: snow in the night. 6. The ground co- 

 vered with snow in the morning, which soon disappeared, rain coming on. 

 7. Rainy morning: day rainy. 8 — 11. Cloudy. 12. Rainy. 13. Cloudy. 

 14. Fine. 15— 17. Cloudy. 18, 19. Gloomy. 20. Fine. 21. Very fine. 

 22. Morning foggy : day fine. 23. Gloomy. 24. Drizzling. 25, 26. Gloomy. 

 27. Fine. 28. Very fine. 29 — 31. Fine. 



RESULTS. 



Winds, N. 1 : NE. 3 : E. l : SE. 8 : S, 1 : SW. 4 : W. 4 : NW. 8. 



Barometer mean height for the month 30"074 inch. 



Thermometer, mean height for the month 42-258° 



Evaporation -89 inch. 



Rain 1-61 inch. 



Penzance. — Dec. 1. Rain. 2. Showers. 3 — 4. Showers, hail and rain. 

 5 — 7. Rain. 8. Fair. 9, 10. Rain. 11. Showers. 12. Fair. 13. Fair: rain. 

 14,15. Misty. 16— 18. Fair. 19, 20. Rain. 21. Fair. 22. Clear. 23— is! 

 Fair. — Rain gauge at the ground level. 



RESULTS. 



Barometer, mean height 29'69 



Register Thermometer 440 



Rain-gauge at the ground-level 1-875 



Prevailing wind N.W. 



Boston. — Dec. 1. Fine: rain p.m. 2. Cloudy : rain p.m. .3. Fine: rain 

 P.M. 4— 6. Fine. 7, 8. Cloudy. 9. Fine. 10, 1 1. Cloudy. 12. Fine. 13- 15. 

 Cloudy. 16. Rain. 17 — 20. Cloudy. 2), 22. Fine. 23 — 25. Cloudy. 

 26. Fine. 27. Cloudy, 28. Fine. 29. Cloudy. 30, 31. Fine. 



Meteor- 



