Meteorological Observations. 159 



bromic acid, and converts it into a body containing bromine, which 

 is heavier than water ; it is not acted upon by iodine when they are 

 triturated together. 



It appears from M. Walter's experiments that anhydrous cam- 

 phoric acid is composed of 



Ten equivalents of carbon 60 



Seven . . . hydrogen .... 7 

 Three . . . oxygen 24 



iT 



and he considers that when this is acted upon by sulphuric acid, it 

 takes one equivalent of oxygen and yields one equivalent of carbon, 

 Avhich escape in combination as oxide of carbon, as already noticed ; 

 the sulphuric acid remaining combines with the camphoric acid, minus 

 the equivalent of carbon to form the sulphocamphoric acid. 



M. Walter observes that the most remarkable character of the sul- 

 phocamphoric is this, that whereas in other acids formed by the re- 

 action of sulphuric on organic compounds, the sulphur exists in them 

 in the state of hyposulphuric acid, in this acid it is in that of sul- 

 phurous acid. — Ann. de Ch. et de Phys., Octobre 1843. 



METEOROLOGICAL OBSERVATIONS FOR DECEMBER 1843. 



Chiswick. — December 1. Overcast: clear. 2. Frosty haze : very fine: hazy. 

 3. Hazy : cloudy and mild. 4. Drizzly. 5. Cloudy and fine. 6. Clear and 

 tine. 7. Drizzly. 8. Very fine. 9. Foggy. 10. Foggy : fine. 11. Very fine. 

 12. Dense fog. 13. Foggy: hazy clouds. 14. Clear and fine. 15, 16. Fine, 

 with clouds. 17. Slight haze : clear and fine: foggy. 18. Foggy, 19, 20. Hazy. 

 21. Overcast. 22. Very fine : thickly overcast. 23. Cloudy and mild. 24. Clear 

 and fine. 25. Mazy : overcast. 26. Drizzly : foggy. 27. Hazy. 28. Cloudy 

 and fine : hazy. £9. Hazy. 30. Overcast: rain. 31. Cloudy: squally with 

 rain. — Mean temperature of the month 2 - 2G° above the average. 



Boston. — Dec. 1. Cloudy. 2. Fine. 3. Fine, beautiful halo round the moon 

 eight o'clock p.m. 4. Fine. 5. Cloudy. 6. Fine. 7. Itain. 8. Fine. 9. Fine: 

 rain i>.m. 10. Foggy. II, 12. Cloudy. 13. Foggy. 14. Fine. 15. Fine: 

 rain early a.m. 10. Cloudy. 17. Fine. 18 — 20. Foggy. 21. Cloudy. 22 — 



24. Fine. 25 — 28. Foggy. 29, 30. Cloudy. 31. Fine. — N.B. This is the 

 driest month since February 1832. 



Stimlu-ick Manse, Orkney. — Dec. 1,2. Cloudy. 3. Drizzle. 4. Fine. 5,6. 

 Heavy showers. 7. Rain: showers. 8. Showers : clear. 9. Cloudy. 10,11. 

 Cloudy : clear. 12. Clear. 13. Cloudy. 14. Cloudy : heavy showers. 15,16. 

 Showers. 17. Drizzle. 18. Showers. 19. Cloudy : fine. 20. Fine. 21. Fine: 

 cloudy: fine. 22. Showers: fair: showers. 23. Showers: fair: damp. 24, 



25. Clear i fair. 26. Damp : drizzle. 27. Clear : fine. 28. Clear. 29. Cloudy. 

 30. Hain : drizzle. 31. Showers: hail -showers. 



ApjJegarlh Manse, Dumfries-shire. — Dec. 1. Hoar frost. 2. Thick fog. 3 — 7. 

 Showers. 8. Fair. 9. Fog and rain p.m. 10 — 13. Cloudy and rain. 14. Fair. 

 15. Slight shower. 16. Fair. 17. Fairandfine. 18. Fair though dull : shower 

 p.m. 19. Fair. 20. Showery. 21. Fair, but thick fog. 22. Very wet and 

 stormy. 23. Slight showers. 24. Slight showers a.m. 25. Showers. 26. Rain 

 p.m. 27. Fair, but cloudy. 28. Slight showers. 29, 30. Fair. 31. Rain. 



Mean temperature of the month 46° - 4 



Mean temperature of December 1842 46 '05 



Mean temperature of spring-water 46 •! 



