Meteorological Observations. 239 



way. It yielded on analysis 38*7 per cent, carbon, 2*1 hydrogen, 

 18" 6 nitrogen, and 40 '6 oxygen. 



An excess of ammonia decomposes clirysammic acid when heated 

 in the same manner as the fixed alkalies, and renders it brown. — 

 Ann. de Ch. et de Phjs., Jan. 1848. 



METEOROLOGICAL OBSERVATIONS FOR JAN. 1848. 

 Chisiuick. — January 1. Foggy : hazy: sleet-showers. 2. Very fine. 3. Densely 

 overcast : cloudy and mild. 4. Exceedingly fine : clear. 5. Overcast: rain: 

 clear. 6. Slight frost : clear: fine. 7. Slight frosty haze: heavy rain: clear. 

 8. Hazy. 9. Frosty : overcast. 10. Overcast : dusky clouds and cold. 11. Uni- 

 formly overcast, with dusky haze. 12. Overcast : slight rain. 13. Clouds tinged 

 with red : overcast: rain. 14. Hazy : drizzly. 15. Cloudy : exceedingly fine, 

 with bright sun : frosty. 16. Sharp frost : very fine : clear and frosty. 17. Rain. 

 18. Fine. 19. Cold easterly haze. 20 — 22. Densely overcast. 23. Slight snow. 

 24. Low fleeting clouds from N.E. 25. Cold dry easterly wind : densely over- 

 cast. 26. Dusky haze : clear and frosty. 27. Frosty. 28. Snowing : clear and 

 frosty: snow in the evening. 29. Foggy: fine: clear. 30. Overcast: rain. 

 31. Densely and uniformly overcast : sleet. 



Mean temperature of the month 33°*62 



Mean temperature of Jan. 1847 34 -26 



Mean temperature of Jan. for the last twenty years 36 '51 



Average amount of rain in Jan 1*59 inch. 



Boston. — Jan. 1. Cloudy: rain early a.m. 2. Cloudy: rain a.m. and p.^f. 

 3. Cloudy. 4. Fine. 5. Cloudy. 6. Fine. 7. Cloudy : snow a.m. 8. Cloudy : 

 snow on the ground. 9. Fine: snow on the ground. 10,11. Cloudy : snow on 

 the ground. 12. Fine. 13, 14. Cloudy. 15. Fine: rain early a.m. 16, 17. 

 Fine. 18. Fine : rain early a.m. 19,20. Fine. 21. Cloudy : snow early a.m. 

 22, 23. Cloudy. 24 — 27. Fine. 28. Cloudy. 29. Cloudy : snow a.m. and p.m. 



30. Cloudy: snow and rain p.5i. 31. Fine: rain r.M. 



Apiilegarth Manse, Dumfries-sliire. — Jan. 1, Frost : cloudy p.m. 2. Thaw and 

 rain. 3. Thaw and rain: snow gone. 4. Rain a.m. : clearccJ: rain i-.m. 5. 

 Heavy rain all night: flood. 6. Frost : cloudy p.m. 7. Frost, sligiit: sprinkling 

 of snow. 8. Frost, slight : drizzle p.m. 9. Frost, slight : harder p.m. 10. Frost, 

 rather hard : snow. 1 1. Frost : fog all day. 12. Thaw ^soft wind : snow gone. 

 13. Remarkably fine: frost p.m. 24. Air moist: rain p.m. 15. No frost: 

 showers and wind p.m. 16. Showery early a.m. : cleared. 17. Frost, severe: 

 slight snow. 18. Frost: clear: keen. 19. Frost: clear and fine. 20. Frost, 

 severe : clear. 21. Frost: cloudy: threatening change. 22. Frost : no change : 

 clear. 23. Frost : beautiful winter day. 24. Frost, keen : clear and fine. 25. 

 Frost : threatening change. 26, 27. Frost : severe weather. 28. Frost : snow 

 inch deep. £9. Frost a.m. : rain p.m. 30. Frost: heavy snow live inches deep. 



31. Frost: clear. 



Mean temperature of the month 33°'8 



Mean temperature of Jan. 1847 35 "9 



Mean temi)erature of Jan. for twenty-five years 34 '9 



Rain in Jan. for twenty years 2'60 inches. 



Sandwick Manse, Orkney. — Jan. I. Cloudy: clear. 2. Showers: rain. .3. 

 Cloudy. 4. Clear: cloudy. 5. Cloudy: rain: cloudy. 6. Clear: cloudy. 

 7. Cloudy: rain: cloudy. 8. Showers: cloudy. 9. Bright: frost: cloudy. 

 10. Rain. II. Bright :'rain. 12. Damp : drizzle. 1.3. Drizzle. 14. Drizzle: 

 shower.-i. 15. Sleet-showers: clear. 16. Bright : showers. 17. Bright : frost : 

 cloudy : frost. 18. Bright : frost: clear: frost. 19. Bright: frost: cloudy frost. 

 20. Clear: frost. 21. Bright : frost ; cloudy : frost. 22. Cloudy. 23. Snow: 

 clear : aurora. 2'1. Bright: clear : aurora. 25. Clear : aurora. 26. Bright: 

 froit : clear : aurora. 27. Blight: clear. 28. Cloudy : frost ; snow-drift; aurora. 

 29. Clear : frost : thaw. 30. Bright : frost : clear : aurora. 31. Bright: frost; 

 clear : frost. 



