Meteorological Observations. 239 



" The observations on the 11th and 12th of February were obtained 

 with great difficulty on account of the faintness of the comets from 

 the effect of moonlight. The light of the larger comet spreads over 

 a considerably greater extent than that of the other, but is not in- 

 trinsically much brighter." 



METEOROLOGICAL OBSERVATIONS FOR JAN, 1846. 



Chiswick. — January 1. Fine. 2, 3. Frosty : fine : overcast. 4. Rain. 5. Sharp 

 frost : cloudy : clear and frosty. 6. Drizzly. 7. Overcast and mild throughout 

 the day and night. 8. Cloudy and fine. 9. Uniformly overcast. 10. Over- 

 cast : drizzly rain. 11. Hazy and drizzly. 12. Cold haze. 13. Hazy: very 

 fine. 14. Foggy : overcast and fine. 15. Fine. 16. Thick fog: rain at night. 

 17. Hazy : drizzly : cloudy and mild. 18. Foggy : rain at night. 19. Constant 

 rain: boisterous, with rain at night. 20. Clear and fine. 21. Rain: densely 

 clouded and mild : boisterous, with rain at night. 22. Boisterous, with rain : 

 densely clouded. 23. Heavy showers. 24. Hazy and mild. 25. Rain. 26] 

 Showery : heavy rain at night. 27. Clear : cloudy : rain at night. 28. Rain : 

 cloudy : very high tide in the Thames : clear. 29. Rain. 30. Overcast. 31, 

 Cloudy : windy at night. 



Mean temperature of the month 43 0, 54 



Mean temperature of January 1845 38 -69 



Average mean temperature of Jan. for the last twenty years 36 -46 



Average amount of rain for the last twenty years 1 -60inch. 



Boston. — Jan. 1. Stormy: rain last night. 2. Fine. 3. Cloudy. 4. Rain. 5. Fine. 



6. Rain. 7. Cloudy. 8. Fine. 9—13. Cloudy. 14, 15. Fine. 16. Foggy. 



17. Cloudy : rain a.m. and p.m. 18. Foggy. 19. Rain : rain early a.m. : rain 

 p.m. 20. Windy: rain early a.m. 21. Cloudy: rain p.m. 22. Cloudy and 

 stormy : rain early a.m. 23. Fine. 24. Cloudy : rain early a.m. 25. Fine : 

 rain early a.m. 26. Cloudy: rain early a.m. 27. Fine. 28,29. Rain. 30, 

 31. Cloudy. — N.B. Not so warm a January since January 1834: the average 

 of that month was 44°-3. 



Sandwick Manse, Orkney. — Jan. 1. Snow-showers. 2. Fine: frost: cloudy. 

 3. Cloudy : clear. 4. Clear : showers. 5. Bright : showers. 6. Damp: clear. 



7. Cloudy: showers. 8. Showers: clear. 9. Cloudy: clear. 10. Rain : cloudy. 

 11. Drizzle.: damp. 12. Drizzle: ha2y. 13. Blight: cloudy. 14. Damp: 

 cloudy. 15. Bain: drizzle. 16. Clear. 17. Damp. 18. Bright: cloudy. 

 19. Damp : showers. 20. Rain: drizzle. 21. Rain: clear. 22. Damp : rain. 

 23. Fine : damp. 24. Fine : frost : damp : aurora. 25. Rain : cloudy. 26. 

 Damp. 27. Damp : rain : clear. 28. Cloudy : showers. 29. Showers. 30. 

 Cloudy: rain. 31. Drizzle: showers. 



Applegarth Manse, Dumfries-shire. — Jan. 1. Snow-showers. 2. Frost: clear 

 and fine. 3. Wet all day. 4, Fine a.m. : shower p.m. 5. Frost a.m. : rain p.m. 

 6,7. Showery. 8. Fair. 9,10. Slight drizzle. 11. Slight drizzle : fog. 12. 

 Fair and mild. 13. Fair a.m. : rain p.m. 14. Fair : one slight shower. 15. Wet 

 a.m. : cleared : fine. 16. Frost, slight : fine. 17. Fair a.m. : slight shower p.m. 



18. Fair, but cloudy. 19. Rain nearly all day. 20. Rain all day : flood. 21. 

 Fair, but cloudy. 22. Drizzling rain. 23. Rain and fog. 24. Thick fog. 

 25. Heavy rain : flood. 26. Drizzling rain. 27. Rain a.m. : fair: rain p.m. 



"28— 31. Rain. 



