Meteorological Observations. 215 



■pring-like ligaments, or ligamenta spiralia as I will call them, are 

 stretched in the expansion of the wings, and upon the relaxation or 

 cessation of the action of the muscles, the physical properties alone 

 of the ligamenta spiralia, in resuming their unstretched state, close 

 the wings. These ligamenta spiralia are numerous, and exist in all 

 the species of Locusta possessing perfect alse which I have examined. 

 — Proceedings of the Philadelphia Academy of Natural Sciences. 



ON THE GENUS CALOPTYLUM. 



A mistake occurred in the notice which appeared in our last 

 Number on this subject, the ' Annals ' being referred to as the work 

 in which Mr. Thompson's paper was published, whereas it should 

 have been Charlesworth's ' Magazine of Nat. Hist.* vol. iv. p. 184. 

 —Ed. 



METEOROLOGICAL OBSERVATIONS FOR JAN. 1847. 



Chiswick. — January 1. Frosty : overcast. 2. Hazy and cold. 3. Dry haze : 

 snow at night. 4. Cloudy. 5. Hazy. 6, 7. Foggy. 8. Hazy. 9. Cold : 

 hazy. 10. Sharp frost at night. 11. Frosty: fine: sharp frost. 12, 13. Foggy, 

 14. Sharp frost : foggy : frosty. 15, 16. Dense fog : frosty at nights. 17. Dry 

 haze : foggy. 18. Cloudy and cold. 19. Overcast: hazy. 20. Slight haze : 

 snow at night. 21. Snowing. 22. Den5e fog throughout. 23. Slight fog: 

 eloudy : rain. 24. Densely clouded : rain : clear. 25. Fine: slight showers in 

 the evening. 26. Partially overcast : fine : boisterous at night. 27. Clear : rain 

 at night. 28. Boisterous : clear and frosty. 29. Fine, with sun : clear and 

 frosty. 30. Clear and frosty : fine : densely overcast. 31. Light haze : cloudy : fine. 



Mean temperature of the month 34°*26 



Mean temperature of Jan. 1846 43 '54 



Mean temperature of Jan. for the last twenty years ... 36 '81 



Average amount of rain in Jan 1-60 inch. 



Boston. — Jan. 1. Foggy: snow on the ground. 2,3. Cloudy. 4. Cloudy: 

 snow early A.M. 5. Cloudy: rain early a.m. 6. Cloudy. 7. Rain. 8 — 11, 

 Cloudy. 12. Cloudy: rain P.M. 13. Cloudy. 14 — 16. Fine. 17 — 20. Cloudy. 

 21. Cloudy : snow P.M. 22. Cloudy : snow on the ground. 23. Cloudy. 24. 

 Cloudy : snow nearly all melted. 25. Fine : rain midday. 26. Fine. 27. Windy. 

 28. Rain. 29 — 31 . Fine. — This January has been the coldest since January 1842, 

 and the driest since 1833. 



Sandwick Manse, Orkney. — Jan. 1. Fog. 2. Cloudy. 3. Damp : showers. 



4. Showers. 5. Showers : rain. 6, 7. Damp. 8. Cloudy. 9. Bright : clear. 

 10 — 12. Bright: frost: clear. 13. Bright: clear. 14. Bright: frost: clear. 

 15. Bright : clear. 16. Drops : cloudy. 17—19. Cloudy : clear : aurora. 20. 

 Fine: frost: clear: frost: aurora. 21. Sleet-showers. 22. Bright: clear. 



23, 24. Cloudy : rain. 25— 27. Bright : clear. 28. Clear : frost: cloudy. 29. 

 Bright: clear. 30. Bright: snow-showers: aurora. 31. Hail-showers: snow- 

 showers: aurora. 



Applegarlh Manse, Dumfries -shire. — Jan. 1 . Clear, but moist. 2. Dull and 

 raw : slight snow. 3. Slight frost: very chilly. 4. Dull : slight frost : rain p.m. 



5. Dull : rain. 6. Fine and fair. 7, 8. Fair, but cloudy. 9, 10. Frost : clear*. 

 11 — 13. Frost, hard. 14. Frost, hard, but cloudy. 15. Thaw. 16. Thaw : 

 drizzle. 17 — 21. Frost again. 22. Frost: snow: thaw. 23. Thaw: sleet. 



24. Heavy rain. 25. Slight frost a.m. : rain. 26. Heavy rain. 27. Rain : 

 cleared p.m. 28. Fair, but dull. 29. Slight frost a.m. 30. Slight frost a.m. ': 

 cloudy. 31. Hard frost : snow P.M. 



Mean temperature of the month 35°'97 



Mean temperature of Jan. 1846 43 '0 



Mean temperature of Jan. for 25 years 34 '9 



Mean rain in Jan. for 20 year* 2*60 inches. 



