Meteorological Observations for March 1828. 399 



General Observations. — This month commenced with cold weather, which 

 kept up till the 7th ; and it was also cold and humid from the 23rd to the 

 end : the other part was mild for the season, the maximum temperature of 

 the external air in the day often being at 63°. 



Rain, frequently accompanied with hail, fell on twelve different days, 

 but the quantity does not amount to two inches. 



On the 14th, 15th, and 16th, thick fogs prevailed here. 



In the afternoon of the 22nd there were two winds, the lower one from 

 N.W., and the upper one from the South, which, uniting the clouds, gra- 

 dually brought on several vivid flashes of lightning, and loud claps of thun- 

 der, which were immediately followed by a heavy shower of hailstones 

 coated with a snowy substance. Soon after 5 o'clock in the morning of 

 the 29th, a smart shower of snow fell, which covered the ground and the 

 surrounding hills for a short time only, as it was soon afterwards succeeded 

 by rain. In the evening of the 30th it again snowed a little, but it disap- 

 peared before the morning. 



After the vernal equinox winter revisited us in keen northerly and easterly 

 winds in the days, and thick hoar frosts in the night ; so that winterly 

 weather was felt here some weeks after the beginning of spring. 



The mean temperature of the air this month is about three degrees 

 higher than the mean of March for the last twelve years. The temperature 

 of spring water is nearly at a stand ; and the ground is now warmer than it 

 has been at the close of March since 1822. But this additional heat does 

 not appear to have modified the prevailing chill in the atmosphere, it being 

 either too small, or dissipated by evaporation, before it could arrive at a 

 sufficient altitude to have any effect. 



The atmospheric and meteoric phcenomena that have come within our 

 observations this month, are one solar and one lunar halo, one meteor ; 

 lightning and thunder in the afternoon of the 22nd, and nine gales of wind, 

 or days on which they have prevailed ; namely, two from the North, two 

 from North-east, one from South-east, one from West, and three from 

 North-west. 



REMARKS. 



London. — March 1, 2. Cold and cloudy. 3 — 5. Fine. 6. Clear and cold. 

 7. Cloudy: showers at night. 8. Hazy: fine. 9, 10. Very fine. 11. Slight 

 fog: very fine. 12. Cloudy. 13 — 15. Very fine. 16, 17. Cloudy. ls.Fine: 

 stormy at night. 19. Very fine. 20,21. Cloudy: with showers of hail. 



22. Cold with slight showers. 23 — 25. Clear and cold. 26. Cloudy: rain 

 at night. 27. Rain in morning : fine. 28. Drizzly : cloudy. 29. Cloudy 

 and cold. 30. Cloudy. 3 1 . Foggy : very fine. 



Boston. — March 1. Cloudy: rain p.m. 2, 3. Cloudy. 4. Cloudy: stormy 

 night. 5. Fine. 6. Fine : snow a.m. 7. Cloudy : rain p.m. 8. Cloudy. 

 9—11. Fine. 12,13. Cloudy. 14,15.Fine. 16— 18.Cloudy. 19.Stormy. 

 20. Cloudy: rain at night. 21. Cloudy : rain p.m. 22. Fine : rain at night. 



23. Fine. 24. Fine: rain p.m. 25, 26. Cloudy. 27. Stormy and rain: rain 

 a.m. 28. Cloudy. 29. Fine: rain a.m. 30. 31. Fine. 



Penzance. — March l. Clear: fair. 2. Fair: clear. 3 — 6. Fair. 7.Fair: 

 showers. S.Clear. 9. Fair. 10. Fair : misty. 11. Misty: rain. 12 — 

 14. Fair. 15. Foggy. 16, 17. Fair. 18. Clear: rain. 1 9. Rain : fair. 

 20. Rain : showers. 21,22. Hail-showers. 23. Hail and snow. 24, 25. Clear : 

 hail-showers. 26. Cloudy : rain. 27. Cloudy: clear. 28. Cloudy: showers. 

 29, so. Clear : showers. 3 1 . Clear. — Rain-gauge ground level. 



Meteoro- 



