Meteorological Observations. 247 



flame. Its composition is expressed by the following numbers : — ' 



Carbon 87-76 '-... 



Hydrogen 1224 



10000 

 It is consequently isomeric with cholesteron. — Journ. de Pharm. et 

 de Chem., Novembre 1849, 



METEOROLOGICAL OBSERVATIONS FOR JAN. 1850. 



Cliiswick. — January!, Sharp frost : fine : cloudy. 2. Hazy: fine. 3. Foggy: 

 hazy. 4. Foggy: overcast: clear. 5,6. Frosty: very fine: clear and frosty. 

 7, Sharp frost : clear ; severe frost at night. 8. Frosty : overcast. 9. Slight fall 

 of granular snow : overcast. 10. Snowing slightly : overcast. II. Hazy through- 

 out. 12. Slight snow : dusky: hazy. 13. Hazy: clear and frosty. 14, 15. 

 Cloudy and cold, 16,17. Densely overcast. 18. Foggy : snow at night, with 

 heavy rain. 19. Cloudy: drizzly. 20. Frosty. 21. Cloudy. 22. Hazy. 23. 

 Hazy : clear at night. 24. Foggy and drizzly. 2.5. Foggy : densely overcast : 

 rain at night. 26. Densely clouded : showery. 27. Sudden rise of barometer : 

 frosty : very fine. 28. Overcast. 29. Very fine : rain. 30. Foggy : very fine. 

 SI. Hazy and cold : heavy rain at night, 



JVlean temperature of the month S3°'1I 



Mean temperature of Jan. 1849 39 '56 



Mean temperature of Jan, for the last twenty-four years . 36 '60 



Average amount of rain in Jan 1 '60 inch. 



Boston. — Jan. 1. Fine, 2. Cloudy, 3,4 Cloudy: rain p.m. 5 — 8. Fine. 

 9—11. Cloudy, 12. Cloudy: snow' a.m. 13. Fine. 14—17, Cloudy, 18. 

 Cloudy: snow and rain P.M. 19. Cloudy: rain early a, m, 20. Cloudy: snow a.m. 



21, 22. Cloudy. 23, Fine. 24, Cloudy, 25. Fine. 26. Cloudy : rain and 

 snow P.M. 27, Fine. 28. Cloudy. 29, 30, Fine. 31. Fine: rain p.m. — 

 N. B. This has been the coldest January since the year 1838. 



Api'h'gart/i Mnnse, Dumfries-shire. — Jan. 1. Frost: dull and threatening change. 

 2. Thaw : small rain, 3. Thaw : drizzle. 4. Slight frost early a.m. : rain and 

 wind P.M. 5. Snow half an inch deep : frost. 6. Frost very hard : snow lying. 

 7, 8. Frost very hard. 9. Frost very hard: thermometer 11°. 10. Cloudy, 

 looking like change. II. Cloudy, but still freezing. 12. Still slight frost, but 

 unsettled. 13. Frost still slight ; cloudy. 14, Frost, slight a.m. : harder p.m. 



15, Bright and clear : hard frost : a little snow. 16. Frost : slight shower of snow : 

 looking dull. 17. Hard frost : clear : snow lying. 18. Hard frost, and heavy 

 snow 4 inches deep. 19. Fro t not so hard : thaw p.m. : frost again. 20. Frost : 

 additional sprinkling of snow. 21. Frost hard again. 22. Frost moderate, 23. 

 Thaw : mild : cloudy, 24, Thaw : snow melting fast. 25, Rain in the night : 

 thaw continuing. 26. Thaw a.m.: came on to freeze at 6 p.m. 27. Hard 

 frost A.M. : thaw and rain p.m. 28. Heavy rain : snow nearly gone. 29. Slight 

 frost A.^!. : keener p.m. 30. Frost moderate : snow all gone. 31. Slight shower 

 of snow A,M. : frost : rain p.m. 



Mean temperature of the month 30°*8 



Mean temperature of Jan. 1849 36 '3 



Mean temperature of Jan. for the last twenty-eight years. 34 '9 

 Average amount of rain in Jan. for the last twenty years. 2'60 inches. 

 Sandwick Manse, Orkney. — Jan, 1. Cloudy, 2, Bright: fine: rain. 3. 



Showers : sleet- showers. 4, Thunder: sleet-showers. 5. Thunder: showers. 



6. Sleet-bhowers. 7. Sleet-showers : clear. 8, Cloudy, 9. Rain : cloudy. 10. 



Cloudy : sleet-showers. 11. Cloudy : clear. 12. Snow- showers : cloudy. 13. 



Cloudy: clear : frost : aurora. 14, Snow-showers: snow-drift. 15, Snow-drift. 



16, Snow-drift : snow : thaw, 17, Rain : clear : frost: aurora, 18, Clear: frost: 

 cloudy. 19. Snow-showers : cloudy : aurora. 20. Cloudy. 21. Cloudy : thaw, 



22. Showers : drizzle. 23, 24. Drizzle. 25, Cloudy : snow-showers, 26, Snow, 

 showers: snow : clear, 27. Snow : frost: snow-showers. 28. Showers : drizzle. 

 29. Bright : large halo, 30. Fine : frost : clear : aurora. 31, Bright : rain. 



