Meteorological Observations. 327 



evaporate even in vacuo, a period arrives at which the hydrate loses its 

 water and precipitates. The author states that other combinations 

 which he has described furnish incontestable proofs of the existence of 

 saline groups, which would be impossible without the presence of 

 water, and in which the oxide appears to be combined in the state 

 of hydrate. — Ann de Ch. et de Phys., Aout 1848. 



METEOROLOGICAL OBSERVATIONS FOR AUG. 1848. 



Cliiswick. — August 1. Heavy showers. 2. Very fine. S. Rain. 4. Cloudy 

 and fine. 5. Heavy showers. 6. Fine : cloudy : showery. 7. Very fine. 8. Fine : 

 rain. 9. Clear : showers : clear. 10. Very fine : rain at night. 11. Overcast: 

 rain. 12. Cloudy. J 3. Overcast : rain. 1 4. Heavy rain. 15. Densely clouded. 

 16. Foggy: overcast: clear. 17. Hazy and damp : overcast. 18. Very fine. 



19. Rain. 20. Very fine. 21. Heavy rain: showery. 22. Heavy shower: 

 clear. 23. Fine. 24. Showery : clear, with lightning at night. 25. Hazy : 

 rain : cloudy and fine. 26. Uniformly overcast : rain. 27. Rain. 28. Cloudy : 

 slight rain. 29. Fine. 30. Very fine. 31. Very fine till 5 p.m., when a very 

 heavy thunder-storm commenced and continued upwards of two hours — an inch 

 of rain falling in the time. 



Mean temperature of the month 58 0, 74 



Mean temperature of Aug. 1847 .< 62*47 



Mean temperature of Aug. for the last twenty years 62 *S2 



Average amount of rain in Aug 2'41 inches. 



Boston. — Aug. 1. Cloudy: rain early a.m. 2. Fine. 3. Rain: rain a.m. 

 4. Fine. 5. Rain : rain a.m. 6. Fine: rain p.m. 7,8. Fine. 9. Fine: hail- 

 storm and rain a.m. 10, 11. Fine. 12. Fine : rain p.m. 13. Fine. 14. Rain. 

 15. Fine. 16, 17. Cloudy. 18. Fine: rain p.m. 19. Cloudy : rain a.m. and p.m. 



20. Fine. 21. Rain : rain a.m. and p.m. : very stormy. 22. Cloudy : rain a.m. 

 and p.m. 23, 24. Fine. 25. Fine : rain p.m. 26. Cloudy : rain a.m. 27. Cloudy : 

 rain p.m. 28. Cloudy. 29—31. Fine. 



Applegarth Manse, Dumfries-shire. — Aug. 1. Fine : one slight shower. 2. One 

 shower. 3. Showery. 4. Slight showers. 5. Fine throughout : thunder. 6. 

 Fine : shower p.m. 7. Fine and fair. 8. Heavy rain all day : thunder : flood. 

 9. Frequent showers. 10. Frequent showers : thunder. 11,12. Fair and fine. 

 13. A few drops : fine. 14, 15. Fair and fine. 16. Fair and fine : a few drops 

 p.m. 17. Heavy rain a.m. : cleared and fine. 18. Fine a.m. : heavy rain p.m. 

 19. Heavy rain a.m. : very high flood. 20. Fine, but cloudy a.m.: shower p.m. 



21. Dull a.m. : rain p.m. 22. Showers. 23. Gentle showers : thunder. 24. 

 Showers. 25. Fair and fine. 26. Complete day of rain : flood. 27. Fair and 

 fine. 28. Rain: cleared p.m. 29. Fine till 6 p.m. : then heavy rain. 30. Fair 

 till 11 a.m. : rain and hail p.m. 31. Very fine day throughout. 



Mean temperature of the month 53 0, 7 



Mean temperature of Aug. 1847 57 '1 



Mean temperature of Aug. for the last twenty- five years . 57 *1 



Rain in Aug. 1847 2-23 inches. 



Average amount of rain in Aug. for twenty years 3 - 60 „ 



Sandwick Manse, Orkney. — Aug. 1, 2. Bright: clear. 3. Cloudy: clear. 

 4—6. Bright : clear. 7. Cloudy : clear. 8. Bright : clear : aurora. 9. Bright: 

 rain. 10. Showers. 11. Showers: clear: cloudy. 12. Cloudy: clear. 13. Clear. 

 14,15. Fine. 16. Bright : frost : clear. 17. Rain: clear. 18. Clear: cloudy. 

 19. Ilain: showers. 20. Showers: clear. 21. Clear: aurora. 22. Clear: 

 cloudy. 23. Showers. 24. Clear. 25. Clear : frost : fine. 26. Cloudy : 

 showers. 27. Clear. 28. Cloudy : clear : drops. 29. Clear : drops. 30. Clear ; 

 showers. 31. Bright : cloudy. 



