Meteorological Observations. 239 



ON THE INDIRECT BLEACHING POWER OF STIB^THYLE. 



During the last year Prof. Lowig and myself made some experi- 

 ments in the laboratory at Zurich upon stibrethyle, in order to test 

 its power of bleaching, and it turned out that this remarkable body 

 destroyed the colour of indigo-solutions still more energetically than 

 even phosphorus. We added a small quantity of stibsethyle to a 

 comparatively large amount of indigo-solution, shook the whole with 

 atmospheric air, and found that the colour was destroyed in a few 

 seconds. 



There can be no doubt that stibmethyle, kakodyle and similar 

 compounds would act like the stibfethyle. These substances are so 

 oxidizable that they take fire in atmospheric air even, at the ordinary 

 temperature ; and it may be inferred that they are more powerful 

 exciters of oxj'gen than phosphorus, and consequently possess a 

 great power of bleaching. — Ibid. 



METEOROLOGICAL OBSERVATIONS FOR JULY 1852. 



Chiswick. — July 1. Fine: cloudy: slightly overcast. 2. Cloudy and fine. 3, 



4. Verj' fine. 5. Excessively hot : thermometer higher in the shade than it has 

 been for at least twenty-six years : lightning at night. 6. Very hot. 7. Cloud- 

 less : hot and dry. 8. Dry haze : sultiy ; clear at night. 9. Very hot. 10. Very 

 fine. 11. Hot and clear. 12. Sultry. 13. Fine : lightning, with distant thunder 

 at night. 14. Overcast: thunder: very hot : lightning, with rain at night. 15. 

 Cloudy and fine : clear. 16. Slight haze : very hot : excessively heavy and con- 

 stant rain at night. 1". Rain : cloudy and warm : clear at night. 18. Very fine : 

 heavy clouds : clear. 19. Very fine. 20. Overcast. 21. Light clouds : very fine : 

 clear. 22 — 24. Very fine. 25. Overcast : thunder : rain. 26. Cloudy and fine : 

 clear. 27. Slight haze : very fine. 28 — 30. Very fine. 31. Heavy dew : very 

 fine : cloudy. 



Mean temperature of the month 67°'37 



Mean temperature of July 1851 60 '71 



Mean temperature of July for the last twenty-six years ... 63 '40 



Average amount of rain in July 2'37 inches. 



Boston. — July 1, 2. Fine. 3. Cloudy. 4. Fine: thermometer 84° at 5 p.m. 



5. Fine : therm! 91° at 2 p.m. 6. Fine :' therm. 86° at 3 p.m. 7. Fine : therm. 81° 

 at 3 P.M. 8. Fine. 9. Fine : therm. 89° at 2 p.m. 10, 11. Fine. 12. Cloudy. 

 13. Fine. 14. Cloudy. 15. Cloudy: rain, with thunder and lightning early a.m. 

 16. Fine: rain, with thunder and lightning p.m.: therm. 86°. 17. Cloudy: 

 therm. 86° 3 P.M. 18. Fine. 19— 22. Cloudy. 23. Fine. 24. Cloudy. 25. Fine: 

 rain P.M. 26. Cloudy : rain a.m. and p.m. 27,28. Fine. 29. Cloudy. 30. Fine. 

 31. Cloudy. 



Sandwich Manse, Orkney. — July 1. Bright: cloudy. 2. Rain : cloudy. 3. 

 Bright : cloudy : fine. 4. Cloudy : clear : fine. 5. Bright : clear : cloudy : thunder 

 and lightning. 6. Rain: cloudy: fine. 7. Hazy: fine. 8. Bright: fine: fog. 

 9. Hazy: showers: tiiunder and lightning. 10. Bright: cloudy. 11. Bright: 

 clear: fine. 12. Bright: fine: cloudy: fine. 13, 14. Briglit : fine : clear : fine. 

 15. Bright : fine : cloudy : fine. 16. Hazy : fine : clear : fine. 17. Cloudy : rain. 

 18. Bright : cloudy : clear : fine. 19. Hazy: cloudy: clear: fine. 20. Bright: 

 cloudy: rain: fine. 21. Rain: cloudy: fine. 22. Bright: hazy: fine. 23. 

 Briglit: fine: cloudy: fine. 24. Drops: fine: cloudy: fine. 25,26. Cloudy: 

 damp. 27. Damp. 28. Cloudy : fine : cloudy : damp. 29. Fog. 30. Rain : fog. 

 31. Damp ; cloudy : damj). — This monlli has been remarkaldy fine and warm. 



Mean tcniiurature of July for twenty-five previous years 54 '79 



Mean teni|)erature of ibis month Gl°*36 



Average quantity of rain in July for six years 2'71 inches. 



