Meteorological Observations. B^s 



its reactions. M. Dumas proposes to examine, under the new point 

 of view described, the action of anhydrous phosphoric acid on the 

 ammoniacal salts formed by the volatile organic acids. 



M. Dumas remarks that if the product which he has obtained 

 should constitute a compound identical with hydrocyanate of methy- 

 lene, all these ammoniacal salts, treated in the same manner, should 

 yield aethers corresponding to certain alcohols, according to the ge- 

 neral formula — 



C»H'»0^ NH3=C~H«-« N=C«-2H'»-2, C2NH. 



In decomposing the latter by potash, there might be produced 

 alcohol C«-2H''-2, 2H0, and prepared by this method, all the 

 alcohols from the fatty acids. — Comptes Rendus, Septembre 13, 1847. 



METEOROLOGICAL OBSERVATIONS FOR OCT. 1847. 

 Chiaunck. — October 1. Hazy : cloudy. 2. Cloudy. 3. Light clouds and fine : 

 overcast. 4. Foggy : fine. 5. Fine : light clouds : clear at night. 6. Dense 

 fog : very fine : lightning and rain at night. 7. Fine : rain : lightning at night : 

 clear. 8. Very fine. 9, 10. Rain. 11. Rain in forenoon: clear at night. 

 12. Slight fog: very fine. 13. Foggy : hazy : cloudy at night. 14. Hazy and 

 drizzly: cloudy. 15. Hazy and cold : slight rain, 16. Foggy : very fine. 17. 

 Foggy, with slight drizzle : very fine. 18. Slight fog : rain. 19. Exceedingly 

 fine : rain. 20. Very fine : rain at night. 21. Rain : clear at night. 22. Fine. 

 23. Densely clouded and boisterous : rain. 24. Slight showers. 25. Very clear : 

 fine: clear and frosty. 26. Frosty: uniformly overcast. 27. Fine: rain. 28. 

 Hazy and mild. 29. Exceedingly fine. 30, Overcast and mild. 31. Cloudy 

 and mild. 



Mean temperature of the month ., 52^*14 



Mean temperature of Oct. 1846 50 '37 



Mean temperature of Oct. for the last twenty years 50 '42 



Average amount of rain in Oct 2*60 inches. 



Boston. — Oct. \.—5. Cloudy. 6. Rain. 7. Fine: rain p.m. 8. Fine. 9. Fog: 

 eclipse of the sun invisible until three-quarters over : fog. 10. Rain : rain a.m. 

 11—13. Fine. 14,15. Cloudy. 16. Fine. 17, 18. Fog. 19,20. Fine. 

 21. Cloudy: rain a.m. 22. Fine. 23. Cloudy: rain p.m. 24 — 26. Fine. 

 27. Rain: rain a.m. and p.m. 28. Fog. 29. Rain: rain a.m. 30. Fine: 

 rain A.M. 31. Cloudy. 



Sandwick Manse, Orkney. — Oct. 1. Clear: cloudy. 2. Cloudy: clear. 3. 

 Cloudy. 4. Cloudy : drops. 5. Bright : showers. 6. Showers. 7. Drizzle. 

 8. Drizzle : clear : aurora. 9. Clear : cloudy. 10. Cloudy : drizzle. II. Clear : 

 fog. 12. Fog. 13. Cloudy : clear : aurora. 14. Cloudy : clear. 15, 16. Clear: 

 cloudy. "17. Showers : drizzle. 18. Rain. 19. Damp : rain. 20,21. Showers: 

 clear. 22. Showers: rain. 23. Showers: sleet- showers. 24. Sleet -showers. 

 25. Clear. 26. Drops: showers. 27. Bright: drops. 28. Cloudy. 29. Cloudy: 

 shower : lightning. 30. Showers : rain. 31. Bright : cloudy. 



Applegarth Manse, Dumfries-shire, — Oct. 1, 2. Chill and droughty. 3, 4. 

 Dull, but fair. 5. Fair a. m. : showery p.m. 6. Heavy rain a.m. 7. Heavy 

 rain a.m. : flood. 8. Frequent showers. 9. Fine a.m. : rain p.m. 10. Heavy 

 rain. 11. Fair: rain in the night preceding. 12. Fair and fine. 13. Fair, 

 but raw and cloudy. 14, 15. Fair, though chilly. 16. Very fine clear day. 

 17. Dull and cloudy. 18. Dull and cloudy : rain p.m. 19. Heavy rain. 20, 

 21. Occasional showers. 22. Rain a.m. : very heavy p.m. 23. Rain early 

 a.m. : fine day. 24. Heavy showers. 25. Fair : fine : clear. 26. Rain nearly 

 all day. 27. Heavy rain and flood. 28. Fog : cleared p.m. 29. Fair and fine. 

 30. Fair a.m. : heavy rain p.m. 31. Rain early a.m. : cleared. 



Mean temperature of the month 49°'5 



Mean temperature of Oct. 1846 49*5 



Mean temperature of Oct. for twenty-five years 49 "6 



Average rain in Oct. for twenty years 3*56 inches. 



Rain in Oct. 1847 509 „ 



Fhil. Mag, S. 3. No. 2 11 . Suppl. Vol. 31 . 2 N 



