Meteorological Observations. S99 



IMPURITY OF COMMERCIAL BROMINE. 

 M. Poselger, in distilling some samples of commercial bromine, 

 found that the boiling-point was not 122° F., but 248° F. ; and that 

 the colour of the liquid became gradually lighter, till it was even- 

 tually quite colourless. On continuing the distillation to dryness, 

 he obtained a residue of charcoal. On separating the bromine from 

 the last portions of the distilled liquid by means of a solution of pot- 

 ash, an aromatic, oily, colourless liquid was obtained, which analysis 

 proved to be carburet of bromine ; this existed in various specimens 

 of bromine to the extent of 6 or 8 per cent., and there is every reason 

 to conclude that it was derived from the aether employed in the pre- 

 paration of this substance. — Journ. de Ph. et de Ch., Fevrier 1849. 



METEOROLOGICAL OBSERVATIONS FOR MARCH 1849. 

 Chiswick. — March 1. Cloudy: clear and windy: cloudy. 2. Fine: cloudy: 

 clear, 3. Overcast. 4. Clear : cloudy and fine : clear. 5. Fine : frosty. 6. 

 Frosty : fine : overcast. 7. Cloudy : boisterous, with rain at night. 8. Fine : 

 hail-shower : clear and frosty at night. 9. Clear and frosty : very fine : slight 

 snow. 10. Clear: cloudy. 11, 12. Overcast throughout. 13. Fine. 14. Cold 

 dusky haze. 15, 16. Overcast. 17. Foggy: fine: clear. 18. Foggy, with heavy 

 dew: hazy: foggy and damp. 19. Foggy: overcast. 20. Dusky haze : over- 

 cast : clear. 21. Overcast : clear. 22. Foggy : cold haze : overcast. 23. Over- 

 cast : cold haze : densely overcast. 24. Fine, but cold : clear and frosty at night. 

 25. Snowing : cloudy and cold : overcast. 26. Densely clouded. 27. Dry haze. 

 28. Foggy : overcast throughout. 29. Hazy : rain : cloudy, SO. Heavy showers. 

 31 Clear: fine : cloudy. 



Mean temperature of the month 41°*56 



Mean temperature of March 1848 42*43 



Mean temperature of March for the last twenty years 42 '62 



Average amount of rain in March l*36inch. 



Boston. — March 1. Cloudy: rain a.m. and stormy. 2. Cloudy. 3. Fine. 

 4. Cloudy. 5,6. Fine. 7. Fine: rain p.m. 8. Cloudy: snow p.m. 9, 10. 

 Fine. 11. Cloudy. 12. Fine, 13. Fine : rain early a.m. 14 — 16. Cloudy. 

 17. Fine. 18, 19. Foggy. 20 — 22. Cloudy, 23. Cloudy: rain p.m. 24. Snow. 

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

 rain p.m. 30, 31. Fine: rain p.m. 



Applegarth Manse, Dumfries-shire. — March I. Fair and clear a.m.: getting 

 cloudy : rain p.m. 2. Fair a.m. : sliowers. 3, Fair : wind rising. 4. Fair : 

 cloudy : fine sunset. 5. Slight shower : cleared. 6. Fair : cloudy : high 

 wind p.m. 7, Rain all day, but light, 8. Frost hard : clear all day. 9. Frost 

 keen. 10. Frost increasing in keenness. 11. Frost slight: shower. 12. Fine 

 spring morning : got colder. 13—17. Fine dry weather. 18. Very fine day. 

 19. Still finer, like May. 20. The same, beautiful we^ither. 21. The same : 

 fog P.M. 22. Frost during the night : fine day. 23, 24. Fine, though dull. 

 25. The same : brighter. 26. Frost : dull p.m. 27, The same dullness : no frost. 

 28, Clear and cool. 29. Shower early. 30. Showery. 31. Slight drops of rain: 

 slight frost. 



Mean temperature of the month 41''8 



Mean temperature of March 1848 41 '2 



Mean temperature of March for twenty-five years 39 '1 



Rain in March 1848 4*1 inchet. 



Rain in March for twenty years 2*3 „ 



Sandwick Manse, Orkney. — March 1, Bright : hail : light showers. 2. Cloudy : 

 showers. 3. Cloudy : clear. 4. Clear : showers. 5. Sleet : showers. 6. Showers. 

 7. Sleet: snow-showers, 8, Snow-showers, 9. Drift: snow-showers, 10. 

 Thaw : showers. 11, Rain: drizzle. 12, Cloudy: snow, 13. Snow-showers: 

 thaw. 14. Drizzle. 15. Fog : damp. 16, Fog: fine, 17, Fine: fog, 18, 

 19. Fog. 20. Fine: clear aurora, 21, Fine : cloudy, 22, Fog : cloudy. 23. 

 Rain. 24, Damp : drizzle. 25, Drizzle : aurora. 26. Sleet-showers : clear 

 aurora. 27. Cloudy : showers. 28. Cloudy : clear aurora. 29. Cloudy. 30. 

 showers. 31. Damp : clear. 



