458 Meteorological Observations. 



the apparatus at the surrounding temperature of 60°'8 F., I saw the 

 thermometer rise successively to 68°, 77°, 86°, and 93°- 2 F. ; but 

 the phrenomenon had previously become sufficiently developed to 

 ender the employment of the thermometer unnecessary, as the heat 

 produced had become sensible by the hand. 



If the experiment appears worth)- of interest, it would be easy to 

 arrange an apparatus to reproduce and exaggerate this phsenomenon. 

 There is no doubt that by means of a machine properly constructed, 

 and composed only of permanent magnets, high temperatures might 

 be produced, so as to place before the eyes of the public assembled 

 in lecture rooms a curious example of the conversion of force into 

 heat. — Comptes Rendus, Sept. 17, 1855, p. 450. 



METEOROLOGICAL BSERVATIONS FOR OCTOBER 1855. 



Chiswick. — October 1. Fine : sliowery : fine. 2. Foggy : cloudy : foggy : rain. 

 3. Dense fog : rain. 4. Densely clouded : heavj' rain. 5. Fine : heavy rain. 6. 

 Very fine : cloudy : rain. 7. Fine : foggy at night. 8. Rain : very fine. 9. Foggy : 

 very fine. 10. Fine. 11. Rain. 12. Cloudy and boisterous : rain. 13. Very 

 fine. 14. Fogiiy: cloudy. 15. Dense fog: fine. 16. Very fine : rain at night. 



17. Rain, with fog. 18. Overcast : fine. 19. Light clouds and fine. 20. Fine: 

 cloudy : fine. 21. Cloudy. 22. Foggy : verj' fine : cloudy. 23. Foggy : uniformly 

 overcast. 24. Fine : clear : fine. 25. Cloudy and boisterous. 26. Very boisterous : 

 overcast : fine. 27. Exceedingly fine. 28. Very clear : fine. 29. Rain : drizzly. 

 30. Constant heavy rain. 31. Rain : cloudy : rain at night. 



Mean temperature of the month 50°"28 



Mean temperature of Oct. 1854 < 48 '20 



Mean temperature of Oct. for the last twe»ty-nine years ... 50 '00 



Average amount of rain in Oct 2-686 inches. 



Boston. — Oct. 1. Cloudy. 2. Cloudy : rain a.m. 3. Cloudy. 4. Rain a.m. and 

 r.M. : heavy thunder-storm. 5. Fine : rain i>.m. 6. Fine. 7. Cloudy : rain a.m. 

 8. Foggy. 9. Cloudy : rain P.M. 10. Fine. 11. Rain a.m. and p.m. 12. Cloudy. 

 13. Fine. 14. Cloudy. 15. Foggv : rain p.m. 16. Fine. 17. Cloudy : rain a.m. 



18. Fine. 19. Cloudy : rain p.m. '20. Fine. 21. Cloudy : rain p.m. 22. Cloudy. 

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

 P.M. 28. Fine. 29. Foggy : rain am. and p.m. 30, 31. Rain a.m. and p.m. 



Sandwich Manse, Orkney. — Oct. 1. Fog a.m. : clear p.m. 2. Drizzle a.m. : 

 damp p.m. 3: Showers a.m. : rain p.m. 4. Rain a.m. and p.m. 5. Clear a.m. 

 and P.M. 6. Bright a.m. : cloudy p.m. 7. Rain a.m. and p.m. 8. Hazy a.m. : 

 drizzle p.m. 9. Cloudy a.m. : sleet-showers, aurora p.m. 10. Cloudy a.m. : 

 dry; rain P.M. 11. Showers a.m. and p.m. 12. Showers a.m. : clear p.m. 13. 

 Fine a.m. : clear, fine, aurora p.m. 14. Fiue, hoar-frost a.m. : clear, fine, aurora 

 P.M. 15. Fine, frost a.m. : clear, fine p.m. 16. Sleet-showers a.m. : clear p.m. 

 17. Showers a.m. : rain p.m. 18. Showers a.m.: sleet-showers, aurora p.m. 



19. Drops A.M. : clear, fiue p.m. 20. Rain a.m. : drizzle p.m. 21. Showers a.m. : 

 clear p.m. 22. Cloudy a.m. and p.m. 23. Rain a.m. : sleet-showers p.m. 24. 

 Hail-showers A.M. : sleet- showers p.m. 25,26. Rain a.m.: showers p.m. 27. 

 Snow-showers a.m. : clear, aurora p.m. 28. Clear, frost a.m. and p.m. 29. Cloudy 

 A.M.: hazy P.M. 30. Bright a.m. : clear p.m. 31. Bright a.m. : cloudy p.m. 



Mean temperature of Oct. for twenty-eight previous years ... 47^64 



Mean temperature of this month 45 -72 



Mean temperature of Oct. 1854 46 -39 



Average quantity of rain in Oct. for fifteen previous years ... 5'08 inches. 



