Meteorological Observations. 159 



in this fluid some time, the extenial investment bursts, and allows the 

 protrusion of globular masses of sarcous matter, as in Leucophri/s, but 

 not to such a great extent. — Proceedings of the Academy of Natural 

 Sciences of Philadelphia, vol. iv. p. 233. 



METEOROLOGICAL. OBSERVATIONS FOR DEC. 1849. 

 Chiswick. — December 1. Very fine. 2. Heavy rain throughout. 3. Rain. 

 4, Hazy clouds: fine : frosty. 5. Rain with fog : overcast at night: sh'ght frost. 

 6. Clear sky and low ground-fog : exceedingly fine. 7. Overcast. 8. Rain : 

 cloudless, and very fine. 9. Frosty and foggy: fine: dense fog. 10. Foggy: 

 uniform haze: overcast. 11. Overcast. 12. Foggy: cloudy and cold. 1:?. 

 Slight drizzle : hazy. 14, Rain: drizzly. 15. Rain : clear at night. 16. Cloudy: 

 very fine: drizzly. 17. Boisterous: fine: clear. 18. Densely overcast: rain. 



19. Cloudy: fine: clear. 20. Clear and fine. 21. Slight snow-showers. 22. 

 Frosty: densely clouded. 23. Clear and frosty: cloudless: clear and frosty. 

 24, Hazy : slight snow : cloudy at night. 25. Clear and fine. 26. Drizzly : 

 densely overcast. 27. Clear. 28. Driftinji snow : clear and frosty throughout : 

 severe frost at night. 29. Cloudy : clear. 20. Clear. 31. Cloudy : fine : overcast. 



Mean temperature of the month S7°*17 



Mean temperature of Dec. 1848 41 '75 



Mean temperature of Dec. for the last twenty-three years S9 '85 

 Average amount of rain in December 1'58 inch. 



Boston. — Dec. 1. Fine. 2. Rain: rain a.m. and p.m. 8. Rain: rain a.m. 

 4. Fine. 5. Cloudy : rain a.m. and p.m. 6. Fine. 7. Cloudy. 8. Rain : 

 rain a.m. 9. Fine. 10. Cloudy. 11. Rain: rain a.m. and p.m. 12. F'ine. 

 13, 14. Cloudy. 15. Cloudy: rain a.m. and p.m. \6. Fine. 17. Cloudy: rain 

 early A.M. 18. Cloudy : rain a.m. and p.m. 19. Fine: rain a.m. and stormy. 



20. Fine. 21. Cloudy: rain a.m. 22. Cloudy. 23. Fine. 24. Cloudy: 

 rain a.m. 25. Cloudy. 26. Fine. 27, 28. Fine: stormy. 29. Fine: 

 snow a.m. 30. Fine. 31. Cloudy. 



Applegarlk Manse, Dumfrtei -shirr. — Dec. 1. Frost a.m.: fog: wet p.m. 2. 

 Storm of wind and rain. 3. Blowing hard : wet : calm p.m. 4. Fine clear frosty 

 day. 5. Snow a.m : wet p. v. 6. Rain and wind. 7. High wind : rain p.m. 

 8. Rain, but not heavy. 9. Fog and light rain. 10. Fog all day. 11. Fair and 

 frosty. 12. Clear an^l cold. 13. Dull and cold: sleet p.m. 14. Fine a.m. : 

 cloudy and stormy p.m. 15. Foggy, with showers. 16. Fine a.m. : dull and 

 damp P.M. 17. Fine, with slight showers. 18. Wet all day. 19, 20. Slight 

 frost: fine. 21. Slight frost : fine : cloudy. 22. Slight frost: clear and fine. 23. 

 Hard frost : cloudy p.m. 24. Change : soft : slight shower. 25. Frost again : 

 mild P.M. 26. Slight frost : shower p.m. 27. Frost: clear: high wind p.m. 

 28,29. Very hard frost : sprinkling of snow. 30. Frost: clear and fine. 31. 

 Frost very hard : thermometer 18^. 



Mean temperature of the month 37°'l 



Mean temperature of Dec. 1848 39*8 



Mean temperature of Dec. for the last twenty- five years ... 38 '1 



Mean rain in December 1'40 inch. 



Ditto average for twenty years in December 2*94 inches. 



Sandwich Mnnne, Orknej/. — Dec. I. Fine : cloudy. 2,3. Showers. 4. Snow- 

 showers. 5. Showers. 6. Cloudy : clear. 7. Cloudy : drizzle. 8. Showers : 

 drizzle. 9. Cloudy : showers: rain. 10 Drizzle : clear : aurora. 11, 12. Cloudy : 

 clear : aurora. 13. Cloudy. 14. Rain: cloudy. 15. Cloudy : showers. 16. 

 Rain : showers: clear. 17. Cloudy : showers.. 18. Showers: damp : showers. 

 19. Bright : showers : sleet. 20. Fine: frost: fine. 21. Fine : frost : aurora. 

 22. Clear: frost: hazy. 23. Rain: cloudy. 24. Fine: damp. 25, 26. Showers, 

 27. Hail-showers. 28. Snow-drift: thunder: snow-drift. 29. Cloudy: clear. 

 30. Showers- cloudy. 31. Clear : cloudy. 



