Meteorological Observations. 239 



liquid st3rrone, and leave the mixture exposed to the air. In a few 

 days the greater part of the styrone is converted into cinnamic alde- 

 hyde, v^rhich is separated from the unaltered styrone by the excellent 

 process of M. Bertagnini. With a concentrated solution of bisul- 

 phite of potash, crystals are obtained, which are washed with aether 

 to free them from the styrone. The crystals are purified by the 

 addition of sulphuric acid diluted with pure cinnamic aldehyde . The 

 crystals dissolve in nitric acid, and in a few moments crystals are 

 formed of the nitrate of the hydruret of cinnamyle. 



The conversion of styrone into hydruret of cinnamyle by the 

 oxygen of the air is explained by the equation — 



CIS H'o 02 + 20=Ci« H8 02+ 2H0. 

 Styrone. Hydruret of 



cinnamyle. 

 — Ibid. p. 61. 



METEOROLOGICAL OBSERVATIONS FOR JULY 1854. 



ChiswicJc. — July 1. Heavy rain : overcast. 2. Very fine : slight rain. 3. Slight 

 rain : fine. 4. Densely clouded. 5. Showery. 6. Very fine : heavy showers. 

 7. Overcast : heavy showers. 8. Rain : very fine : clear. 9. Very fine : cloudy. 

 10. Showery : heavy rain at night. 11. Cloudy. 12. Drizzly : densely overcast. 

 13. Very fine. 14. Overcast : clear. 15. Densely clouded : very fine. 16. Very 

 fine. 17. Rain: very fine. 18 — 21. Very fine : air very dry. 22. Quite cloud- 

 less. 23. Clear and calm. 24. Sultry : lightning at night. 25. Very hot : light- 

 ning at night. 26. Slight haze : cloudy : rain. 27. Easterly haze : rain. 28. 

 Clear and fine. 29. SUght fog : cloudy. 30. Very fine : thunder-storm 2 to 5 p.m. 

 31. Uniformly overcast : heavy thunder clouds. 



Mean temperature of the month 61°-59 



Mean temperature of July 1853 61 '94 



Mean temperature of July for the last twenty-eight years ... 63 '17 

 Average amount of rain in July 2*42 inches. 



Boston. — July 1. Cloudy : rain a.m. 2. Cloudy. 3. Cloudy : rain p.m. 4. 

 Fine : rain p.m. 5. Fine. 6, 7. Cloudy. 8. Cloudy : rain a.m. 9. Cloudy. 

 10. Cloudy: rain a.m. and p.m. 11. Cloudy. 12. Rain a.m. and p.m. 13. 

 Cloudy. 14,15. Cloudy : rain a.m. and p.m. 16 Fine. 17. Cloudy : rain a.m. 

 and P.M. 18. Cloudy : rain a.m. 19, 20. Cloudy. 21. Fine : thermometer 84° 

 5 P.M. 22—24. Fine. 25—29. Cloudy. 30. Fine. 31. Cloudy : rain a.m. 

 and P.M. 



Sandwich Manse, Orkney. — July 1. Cloudy a.m. and p.m. 2. Cloudy a.m. : 

 showers p.m. 3. Cloudy a.m. : rain p.m. 4. Rain a.m. : fog p.m. 5. Cloudy a.m. : 

 hazy p.m. 6. Bright a.m. : rain p.m. 7. Clear a.m. : clear, fine p.m. 8. Bright, 

 fine A.M. : cloudy p.m. 9. Drizzle a.m. : cloudy p.m. 10. Bright a.m.: cloudy 

 P.M. 11. Cloudy A.M. and p.m. 12. Drizzle a.m. and p.m. 13. Rain a.m. : 

 damp P.M. 14. Damp a.m. and p.m. 15. Rain a.m. : clear, fine p.m. 16. Cloudy 

 A.M. : cloudy, fine p.m. 17. Damp a.m. : clear, fine p.m. 18. Clear, fine a.m. : 

 fine, fog P.M. 19. Hazy a.m. : cloudy p.m. 20, 21. Clear, fine a.m. and p.m. 

 22. Showers a.m. : clear p.m. 23, 24. Cloudy a.m. and p.m. 25. Drizzle a.m. : 

 cloudy P.M. 26. Showers a.m. : clear, fine p.m. 27. Clear a.m. : cloudy, fine p.m. 

 28. Clear, fine a.m. and p.m. 29. Clear, fine a.m. : cloudy, fine p.m. 30. Cloudy 

 A.M. : fog P.M. 31. Fog a.m. and p.m. 



Mean temperature of July for twenty-seven previous years ... 55°-08 



Mean temperature of this month 55 '25 



Mean temperature of July 1853 58 -15 



Average quantity of rain in July for fourteen previous years . 2*40 mches. 



