Meteorological Observations, 239 



'<b 



tain what the force was when the engine was running at a working 

 speed, though it was considerably less. The most important and 

 interesting point, however, is the expense of the power. Professor 

 Page stated that he had reduced the cost so far that it was less than 

 steam under many and most conditions, though not so low as the 

 cheapest steam-engines. With all the imperfections of the engine, 

 the consumption of 3 lbs. of zinc per day would produce one-horse 

 power. The larger his engines, contrary to what fias been known 

 before, the greater the ceconomy. Professor Page was himself sur- 

 prised at the result. There were yet practical difficulties to be over- 

 come, the battery has yet to be improved, and it remains yet to try 

 the experiment on a grander scale — to make a power of 100 horse, 

 or more. — National Intelligencer (American paper). 



METEOROLOGICAL OBSERVATIONS FOR JULY 1850. 



Chiswick. — July 1. Cloudy: clear. 2. Fine. 3. Rain : cloudy and boisterous. 

 4. Heavy rain. 5. Fine : clear. 6. Fine : overcast. 7. Rain. 8. Very 

 fine. 9. Cloudy: showery. 10,11. Very fine. 12. Foggy : overcast. 13, 

 14. Overcast and fine. 15. Very fine: sultry: clear. 16. Very fine: cloudy. 

 17. Slight haze: very fine : overcast : rain. 18. Heavy rain : sultry : cloudy and 

 mild. 19. Rain. 20. Overcast. 21. Cloudy and fine. 22, 23. Very fine. 



24. Cloudy : rain at night. 25. Heavy showers. 26. Fine : windy : cloudy : 

 rain. 27. Rain : showery. 28. Slight showers. 29. Cloudy : very fine : quite 

 clear. 30. Cloudy : clear at night. 31. Slight haze : fine. 



Mean temperature of the month 61°'91 



Mean temperature of July 1849 62*29 



Mean temperature of July for the last twenty-three years . 63 "23 



Average amount of rain in July 238 inches. 



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



with thunder and lightning p.m. 5. Cloudy. 6. Cloudy : rain a.m. and p.m. 



7. Rain. 8. Fine. 9. Cloudy: rain p.m. 10—12. Cloudy. 13 — 15. Fine. 



16. Fine: rain a.m. and p.m. 17. Fine. 18. Calm: rain p.m. 19. Rain: 



rain a.m. and p.m. 20, 21. Cloudy. 22,23. Fine. 24. Cloudy : rain early a.m. 



25, 26. Cloudy : rain a.m. and p.m. 27. Rain : rain a.m. and p.m. 28. Cloudy : 

 rain a.m. and p.m. 29, 30. Cloudy. 31. Fine : rain a.m. and p.m. 



Applegarth Manse, Dumfries-shire. — July 1. Heavy rain at night: showers. 

 2. Showers all day and wind. 3. Showers : fair p.m. : wind. 4. Showers : 

 cleared p.m. 5. Heavy showers : fine p.m. 6. Rain all day. 7. Fine a.m. : a 

 few drops p.m. 8. Very fine all day. 9. Showers nearly all day. 10. Very fine 

 all day. 11. Very warm : slight drizzle. 12. Very warm : thunder. 13. Very 

 warm: oppressive. 14. Very warm: close. 15. Very warm : bright. 16. Very 

 warm: slight showers : thunder. 17. Very warm : thunder. 18. Warm : dull: 

 hazy: thunder. 19. Warm: shower early. 20. Warm still and pleasant. 21. 

 Warm and fine : cloudy p.m. 22. Warm : a few drops of rain. 23. Warm : 

 sultry : thunder. 24. Heavy rain. 25. Fair a.m. : wet all rest of the day. 26. 

 Showery all day. 27. Very slight drizzle. 28. Fair : warm. 29. Fair and very 

 fine. 30. Fair and warm. 31. Shower early : fair p.m. 



Mean temperature of the month , 59°'4 



Mean temperature of July 1849 57 *0 



Mean temperature of July for the last twenty-eight years ... 58 *1 



Average rain in July for twenty years 3'91 inches. 



Sandwick Manse, Orkney. — July 1. Showers. 2. Clear : drops. 3. Rain. 4. 

 Fine: clear. 5. Cloudy : clear. 6. Clear: fine. 7. Clear: showers. 8. Showers: 

 hail. 9. Bright : clear. 10. Cloudy : fine. 11. Fog: rain. 12. Cloudy. 13. 

 Cloudy: fine. 14, 15. Fine: very fine. 16. Fine: very fine: hot. 17. Drops: 

 showers: fog. 18. Cloudy : fine. 19. Cloudy : fine : cloudy. 20. Cloudy: 

 fine: fog. 21. Bright : hazy. 22. Hazy : fine. 23. Bright : fine. 24. Clear : 

 fine. 25. Clear : fine : hot : fog. 26. Cloudy : hot : drizzle. 27. Fog : damp. 

 28. Cloudy : fog. 29,30. Cloudy. 31. Bright: clear. 



