Meteorological Observations. 223 



of the microscope, he found to be an eye, composed of a vitreous 

 body, having nearly two-thirds of its posterior part covered by pig- 

 mentum nigrum, and attached to a nervous filament, which he after- 

 wards traced to the supra-cesophageal ganglia. The presence of 

 this organ in other species or genera, he had not yet had an oppor- 

 tunity of determining. — Proc. Acad. Nat. Sci. Jan. 11, 1848, p. 1. 

 vol. v. 



METEOROLOGICAL OBSERVATIONS FOR JULY 1848. 



Chisivick. — July 1 . Clear : cloudy and cold : clear. 2. Fine : overcast. 3. 

 Drizzly : overcast. 4. Overcast. 5, 6. Very fine. 7. Sultry : cloudy. 8. Fine : 

 heavy showers. 9. Constant rain. 10 — 13. Very fine. 14. Very fine : thunder, 

 lightning and rain at night. 15. Cloudy and fine : clear at night. 16 — 18. Very 

 fine. 19. Cloudy. 20. Cloudy and boisterous. 21. Clear: cloudy: rain. 

 22. Clear : cloudy. 23. Cloudy : fine : rain. 24. Cloudy and fine. 25. Rain. 

 26. Overcast : boisterous, with slight rain. 27. Cloudy. 28, 29. Very fine. 

 30. Overcast: rain. 31. Rain : overcast. 



Mean temperature of the month 62 0, 9 



Mean temperature of July 1847 65 *84 



Mean temperature of July for the last twenty years 63 *14 



Average amount of rain in July 2*36 inches. 



Boston. — July 1. Rain: rain a.m. and p.m. 2. Fine: rain p.m. 3. Fine. 

 4. Cloudy. 5. Fine. 6. Fine : thermometer 84° 2 p.m. 7. Cloudy. 8. Windy. 

 9. Rain. 10. Cloudy. 11. Fine. 12. Cloudy. 13. Fine. 14. Fine: rain 

 and thunder p.m. 15. Cloudy. 16 — 18. Fine. 19. Cloudy. 20. Cloudy : rain, 

 with thunder and lightning p.m. 21. Fine : rain p.m. 22. Fine. 23, 24. Cloudy : 

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

 28. Fine. 29, 30. Cloudy. 31. Cloudy : rain a.m. 



Applegarth Manse, Dumfries-shire. — July 1. Dull a.m. : cleared and fine. 2. 

 Heavy showers. 3,4. Fair and fine, though sharp. 5. Cloudy p.m., but fair. 

 6. Heavy rain a.m. : cleared. 7. Heavy shower. 8. Very heavy showers. 

 9. Rain a.m. : cleared p.m. 10. Fine, but cloudy. 11. Fine: warm. 12. Very 

 fine. 13. Very sultry : thunder. 14. Fine soft shower p.m. 15. Fine : thunder. 

 16. Fine bracing air. 17. Fine, but cool. 18. Drizzling day. 19. Rain all 

 day. 20. Frequent showers. 21. Bright and dry : shower p.m. 22. Wet nearly 

 all day. 23. Occasional showers. 24. Fine : slight shower. 25. Wet. 26. 

 Fine throughout. 27. Heavy shower : thunder. 28. Showery : fine p.m. 29. 

 Fair and fine. 30. Rain all day. 31. Fine, though cloudy. 



Mean temperature of the month 56°'5 



Mean temperature of July 1847 61 '5 



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

 Average amount of rain in July for twenty years 39 1 inches. 



Sandwich Manse, Orkney. — July 1. Bright: drops. 2. Bright : clear. 3. Clear. 

 4. Cloudy: damp. 5. Bright : cloudy. 6. Rain : cloudy. 7. Bright: thunder 

 and rain. 8. Bright: fog. 9. Fog. 10. Cloudy: clear. 11. Bright: rain. 

 12. Bright: damp. 13. Cloudy. 14. Cloudy: clear. 15. Bright : drizzle. 

 16,17. Damp : drizzle. 18. Showers : cloudy. 19. Rain : damp. 20. Damp: 

 rain. 21. Bright: drops. 22. Bright: rain. 23. Showers: clear. 24. Bright: 

 clear : showers. 25. Bright : heavy showers. 26. Bright : drops. 27. Rain : 

 damp. 28. Clear. 29. Clear : fine. 30. Showers : rain. 31. Clear: cloudy. 



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