Meteorological Observations. 3^7^ 



this body that I give the name of hydrocyanaldine. It is insipid, has 

 no reaction upon vegetable colours, dissolves in water, aether, and 

 more readily in alcohol. It fuses at a low temperature, and sub- 

 limes at a moderate heat ; when briskly heated it is decomposed with 

 an odour analogous to that of hydrocyanic acid. The solution of 

 this body is not precipitated by salts of silver, even after the addition 

 of nitric acid ; but when the solution is heated with silver salts, 

 cyanide of silver is precipitated and aldehyde developed. When 

 heated with potash, hydrocyanaldine evolves ammonia, and the solu- 

 tion becomes brown, with separation of resin of aldehyde. 



The analysis of hydrocyanaldine gave me the formula C^ H^ N^ 

 or C'8 H'^N*, and its formation is expressed by the equation — 



3(C4H*O^^NH3) + 3C2HN+2HCl=C»8H'2N4.|-2NH4Cl-f6HO. 

 Aldehyd. ammonia. 



This exhibits some analogy with the formation of thialdine, — 

 3(C* H4 O^ NH3) + 6HS= Ci2 h's NS^ + 2NH4S + 6H0. 



Hydrocyanaldine nevertheless differs greatly from thialdine, espe- 

 cially because it has not distinct basic properties ; at least I have 

 not succeeded in preparing saline compounds of this body. — Comptes 

 Rendus, July 3, 1854, p. 55. 



METEOROLOGICAL OBSERVATIONS FOR AUG. 1854. 

 Chiswick. — August 1. Cloudy : clear. 2. Clear : very fine : heavy rain at night. 

 3. Overcast : rain. 4. Overcast : heavy rain. 5. Rain : overcast. 6, 7. Overcast : 

 clear. 8. Very fine. 9. Fine : overcast : very clear at night. 10, 11. Very fine. 

 12. Densely clouded : very clear at night. 13. Very fine. 14. Cloudy : very fine : 

 clear. 15. Very clear : cloudy : clear. 16. Fine : overcast, 17. Fine : rain : very 

 clear. 18. Fine: cloudy. 19. Very clear. 20. Cloudy and fine. 21. Overcast. 

 22. Cloudy and fine : clear. 23. Overcast : rather boisterous, with rain. 24. Fine : 

 cloudy and boisterous : fine. 25. Fine. 2o. Exceedingly fine. 27. Very fine : 

 overcast. 28. Very fine. 29. Very hot. 30. Cloudless and very hot, with dry 

 air. 31. Very fine. 



Mean temperature of the month 60°-70 



Mean temperature of Aug. 1853 59*69 



Mean temperature of Aug. for the last twenty-eight years... 62 -03 



Average amount of rain in Aug 2*47 inches. 



Boston. — Aug. 1, 2. Cloudy: rain a.m. and p.m. 3. Cloudy. 4. Cloudy: 

 rain A.M. and P.M. 5— 9. Cloudy. 10, 11. Fine. 12, 13. Cloudy. 14. Cloudy: 

 rain P.M. 15. Fine: rain p.m. 16. Fine. 17. Cloudy: rain p.m. 18. Cloudy. 

 19. Fine. 20. Fine: rain. 21. Cloudy: rain a.m. 22. Fine: rain, with 

 thunder and lightning p.m. 23. Cloudy. 24. Fine : rain p.m. 25. Fine. 26, 

 27. Cloudy. 28—30. Fine. 31. Cloudy. 



Sandwich Manse, Orkney. — Aug. 1. Fog a.m. : drizzle p.m. 2. Bright a.m. : 

 clear p.m. 3, 4. Cloudy a.m. and p.m. 5. Damp a.m. : drizzle p.m. 6. Cloudy 

 a.m. : drizzle p.m. 7. Cloudy a.m. : damp p.m. 8, 9. Cloudy a.m. : drops p.m. 

 10. Cloudy a.m. : clear, fine p.m. 11. Bright a.m. : bright, fine p.m. 12. Cloudy 

 A.M. : showers p.m. 13. Showers a.m. : clear, fine p.m. 14. Cloudy a.m. : rain, 

 thunder P.M. 15. Bright a.m. : cloudy p.m. 16. Bright a.m. : clear p.m. 17. 

 Bright, fine a.m. : clear, fine p.m. 18. Clear, fine a.m. : cloudy p.m. 19. Cloudy 

 a.m. : showers, aurora p.m. 20. Bright a.m. : cloudy, fine p.m. 21. Drops a.m. : 

 showers p.m. 22. Showers a.m. : cloudy p.m. 23. Rain, cloudy a.m. : showers 

 P.M. 24. Showers a.m. and p.m. 25. Cloudy a.m. and p.m. 26. Drizzle a.m. : 

 cloudy p.m. 27. Damp a.m. : cloudy p.m. 28. Cloudy a.m. and p.m. 29. Cloudy 

 a.m.: rain p.m. 30. Showers a.m. and p.m. 31. Showers a.m. : cloudy p.m. 

 Mean temperature of Aug. for twenty-seven previous years . 54°-99 



Meaa temperature of this month 55 -06 



Mean temperature of Aug. 1853 55 -98 



Average quantity of rain in Aug. for fourteen previous years . 2 99 inches. 



